1. Consider the plant described by 0 i(t) › = [ 2 ] ² (0+ [ 1 ] (0) + [ 2 ] 4 (0) (t) u(t) d(t) 0 y(t) = [n² - 2π 2-π] x(t) + u(t) ㅠ G(s) = = s² + (2π)s s² - π² - 2π (s+2 S-T (S-T) (S+T) = s+2 S + T

Answers

Answer 1

Main Answer:

The given equation describes a plant with an input signal i(t) and an output signal y(t). The transfer function G(s) represents the dynamics of the plant in the Laplace domain.

Explanation:

The given equation can be interpreted as a mathematical representation of a dynamic system, commonly referred to as a plant, which is characterized by an input signal i(t) and an output signal y(t). The plant's behavior is governed by a transfer function G(s) that relates the Laplace transform of the input signal to the Laplace transform of the output signal.

In the first equation, i(t) › = [ 2 ] ² (0+ [ 1 ] (0) + [ 2 ] 4 (0) (t) u(t) d(t), the input signal is represented by i(t). The term [ 2 ] ² (0) indicates the initial condition of the input signal at t=0. The term [ 1 ] (0) represents the initial condition of the first derivative of the input signal at t=0. Similarly, [ 2 ] 4 (0) (t) represents the initial condition of the second derivative of the input signal at t=0. The u(t) term represents the unit step function, which is 0 for t<0 and 1 for t≥0. The d(t) term represents the Dirac delta function, which is 0 for t≠0 and infinity for t=0.

In the second equation, y(t) = [n² - 2π 2-π] x(t) + u(t) ㅠ, the output signal is represented by y(t). The term [n² - 2π 2-π] x(t) represents the multiplication of the Laplace transform of the input signal x(t) by the transfer function [n² - 2π 2-π]. The term u(t) represents the unit step function that accounts for any additional input or disturbances.

The transfer function G(s) = s² + (2π)s / (s² - π² - 2π) describes the dynamics of the plant. It is a ratio of polynomials in the Laplace variable s, which represents the complex frequency domain. The numerator polynomial s² + (2π)s represents the dynamics of the plant's zeros, while the denominator polynomial s² - π² - 2π represents the dynamics of the plant's poles.

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Related Questions

In a survey of 400 likely voters, 214 responded that they would vote for the incumbent and 186 responded that they would vote for the challenger. Let p denote the fraction of all likely voters who preferred the incumbent at the time of the survey.
and let p be the fraction of survey respondents who preferred the incumbent.
Using the survey results, the estimated value of p is

Answers

Answer:

[tex]p = \frac{214}{400} = .535 = 53.5\%[/tex]

Which type(s) of symmetry does the uppercase letter H have? (1 point)
reflectional symmetry
point symmetry
reflectional and point symmetry
rotational symmetry

Answers

The uppercase letter H has reflectional symmetry and does not have rotational symmetry or point symmetry.

The uppercase letter H has reflectional symmetry. Reflectional symmetry, also known as mirror symmetry, means that there is a line (axis) along which the shape can be divided into two equal halves that are mirror images of each other. In the case of the letter H, a vertical line passing through the center of the letter can be drawn as the axis of symmetry. When the letter H is folded along this line, the two halves perfectly match.

The letter H does not have rotational symmetry. Rotational symmetry refers to the property of a shape that remains unchanged when rotated by a certain angle around a central point. The letter H cannot be rotated by any angle and still retain its original form.

The letter H also does not have point symmetry, which is also known as radial symmetry or rotational-reflectional symmetry. Point symmetry occurs when a shape can be rotated by 180 degrees around a central point and still appear the same. The letter H does not exhibit this property as it does not have a central point around which it can be rotated and remain unchanged.

In summary, the uppercase letter H exhibits reflectional symmetry but does not possess rotational symmetry or point symmetry.

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what is the area of the scalene triangle shown (ABC), if AO=10cm,
CO=2cm, BC=5cm, and AB=12.20? (Triangle AOB is a right
triangle.)

Answers

Area of scalene triangle can be found using formula for area of triangle,is given by half product of base and height.Area of triangle ABC = Area of triangle AOB - Area of triangle BOC = 10 cm² - 12.20 cm² = -2.20 cm².

a) To find the area of triangle AOB, we can use the formula: Area = (1/2) * base * height. Substituting the values, we get: Area = (1/2) * 10 cm * 2 cm = 10 cm².

 

b) Now, to find the area of the scalene triangle ABC, we can subtract the area of triangle AOB from the area of triangle ABC. Given that AB = 12.20 cm and BC = 5 cm, we can find the area of triangle ABC by subtracting the area of triangle AOB from the area of triangle ABC.

Area of triangle ABC = Area of triangle AOB - Area of triangle BOC = 10 cm² - 12.20 cm² = -2.20 cm². Since the resulting area is negative, it indicates that there might be an error in the given values or construction of the triangle. Please double-check the measurements and information provided to ensure accurate calculations.

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You are to repaying a loan with 96 monthly repayments of $180.00, with the first repayment being one month after you took out the loan. Interest is charged at j12=8.0730%p.a. Immediately after your 93 th repayment, the Outstanding Principal is: 1) $532.81 2) $529.25 3) $543.64 4) $540.00

Answers

The outstanding principal after the 93rd repayment is approximately $532.81.  The correct answer is 1) $532.81.

To calculate the outstanding principal after the 93rd repayment, we need to determine the loan's initial principal and the monthly interest rate.

- Monthly repayment: $180.00

- Number of repayments: 96

- Interest rate: 12 = 8.0730% per annum

First, let's calculate the monthly interest rate by dividing the annual interest rate by 12:

Monthly interest rate = j12 / 12

Monthly interest rate = 8.0730% / 12

Monthly interest rate = 0.67275% or 0.0067275 (as a decimal)

Next, we can use the loan amortization formula to calculate the initial principal (P) of the loan:

Initial principal (P) = Monthly repayment / ((1 + Monthly interest rate)^(Number of repayments) - 1)

P = $180.00 / ((1 + [tex]0.0067275)^(96) - 1)[/tex]

P ≈ $14,557.91

Now, we can determine the outstanding principal after the 93rd repayment. We need to calculate the remaining principal after 93 repayments using the following formula:

Outstanding principal = Initial principal * ((1 + Monthly interest rate)^(Number of repayments) - (1 + Monthly interest rate)^(Number of repayments made))

Outstanding principal = $14,557.91 * ((1 + 0.0067275)^(96) - (1 + [tex]0.0067275)^(93))[/tex]

Outstanding principal ≈ $532.81

Therefore, the outstanding principal after the 93rd repayment is approximately $532.81.

The correct answer is 1) $532.81.

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A square section rubbish bin of height 1.25m x 0.2 m x 0.2 filled uniformly with rubbish tipped over in the wind. It has no wheels has a total weight of 100Kg and rests flat on the floor. Assuming that there is no lift, the drag coefficient is 1.0 and the drag force acts half way up, what was the wind speed in m/s? O 18.4 O 32.6 0 2.3 04.6 09.2 A large family car has a projected frontal area of 2.0 m? and a drag coefficient of 0.30. Ignoring Reynolds number effects, what will the drag force be on a 1/4 scale model, tested at 30 m/s in air? O 38.27 N O 2.60 N • 20.25 N 0 48.73 N O 29.00 N The volume flow rate is kept the same in a laminar flow pipe but the pipe diameter is reduced by a factor of 3, the pressure drop will be: O Increased by a factor of 3^4 O Increased by a factor of 3^5 O Reduced by a factor of 3^3 O Increased by a factor of 3^3 O Increased by a factor of 3^2

Answers

Q1(A) Velocity of wind is 32.6 m/s. Q2(A) Drag force on the model car is 1828 N. Q3(A) the correct answer is Increased by a factor of 3^4.

Question 1A square section rubbish bin of height 1.25 m × 0.2 m × 0.2 m filled uniformly with rubbish tipped over in the wind. It has no wheels, has a total weight of 100 kg, and rests flat on the floor.

Assuming that there is no lift, the drag coefficient is 1.0, and the drag force acts halfway up, what was the wind speed in m/s?

Solution: Given, Height of square section rubbish bin, h = 1.25 m

Width of square section rubbish bin, w = 0.2 m

Depth of square section rubbish bin, d = 0.2 m

Density of air, ρ = 1.225 kg/m3

Total weight of rubbish bin, W = 100 kg

Drag coefficient, CD = 1.0

The drag force acts halfway up the height of the rubbish bin.

The velocity of wind = v.

To find v,We need to find the drag force first.

Force due to gravity, W = m*g100 = m*9.81m = 10.19 kg

Volume of rubbish bin = height*width*depth

V = h * w * d

V = 0.05 m3

Density of rubbish in bin, ρb = W/Vρb

= 100/0.05ρb

= 2000 kg/m3

Frontal area,

A = w*h

A = 0.25 m2

Therefore,

Velocity of wind,

v = √(2*W / (ρ * CD * A * H))

v = √(2*100*9.81 / (1.225 * 1 * 1 * 1.25 * 0.2))

v = 32.6 m/s

Question 2A large family car has a projected frontal area of 2.0 m2 and a drag coefficient of 0.30.

Ignoring Reynolds number effects, what will the drag force be on a 1/4 scale model, tested at 30 m/s in air?

Solution: Given,

Projected frontal area, A = 2.0 m2

Drag coefficient, CD = 0.30

Velocity, V = 30 m/s

Let FD be the drag force acting on the original car and f be the scale factor.

Drag force on the original car,

FD = 1/2 * ρ * V2 * A * CD;

FD = 1/2 * 1.225 * 30 * 30 * 2 * 0.3;

FD = 1317.75 N

The frontal area of the model car is reduced by the square of the scale factor.

f = 1/4

So, frontal area of the model,

A’ = A/f2

A’ = 2.0/0.16A’

= 12.5 m2

The velocity is same for both scale model and the original car.

Velocity of scale model, V’ = V

Therefore, Drag force on the model car,

F’ = 1/2 * ρ * V’2 * A’ * CD;

F’ = 1/2 * 1.225 * 30 * 30 * 12.5 * 0.3;

F’ = 1828 N

Question 3 The volume flow rate is kept the same in a laminar flow pipe but the pipe diameter is reduced by a factor of 3, the pressure drop will be:

Solution: Given, The volume flow rate is kept the same in a laminar flow pipe but the pipe diameter is reduced by a factor of 3.

According to the Poiseuille's law, the pressure drop ΔP is proportional to the length of the pipe L, the viscosity of the fluid η, and the volumetric flow rate Q, and inversely proportional to the fourth power of the radius of the pipe r.

So, ΔP = 8 η LQ / π r4

The radius is reduced by a factor of 3.

Therefore, r' = r/3

Pressure drop,

ΔP' = 8 η LQ / π r'4

ΔP' = 8 η LQ / π (r/3)4

ΔP' = 8 η LQ / π (r4/3*4)

ΔP' = 3^4 * 8 η LQ / π r4

ΔP' = 81ΔP / 64

ΔP' = 1.266 * ΔP

Therefore, the pressure drop is increased by a factor of 3^4.

Increased by a factor of 3^4

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Find the volume of revolution generated by revolving the region bounded by y=x⁴;y=0;x=0; and x=1, about the x-axis.

Answers

To find the volume of revolution generated by revolving the region bounded by the given curves about the x-axis, the disk method can be used. The volume of revolution is π/9.

Using the disk method, the volume of revolution is given by the integral of the cross-sectional area from x = 0 to x = 1. The cross-sectional area of each disk at a given x-value is given by π * ([tex]f(x))^2[/tex], where f(x) represents the function that defines the boundary of the region.

In this case, the function defining the boundary is f(x) = [tex]x^4.[/tex] Therefore, the cross-sectional area of each disk is π * [tex](x^4)^2[/tex] = π * [tex]x^8[/tex].

To calculate the volume, we integrate the cross-sectional area over the interval [0, 1]:

V = ∫[0,1] π * [tex]x^8[/tex] dx

Evaluating the integral, we get:

V = π * [(1/9)[tex]x^9[/tex]] |[0,1]

V = π * [(1/9)([tex]1^9[/tex] - [tex]0^9[/tex])]

V = π/9

Therefore, the volume of revolution generated by revolving the region about the x-axis is π/9.

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According to Newton's Second Law of Motion, the sum of the forces that act on an object with a mass m that moves with an acceleration a is equal to ma. An object whose mass is 80 grams has an acceleration of 20 meters per seconds squared. What calculation will give us the sum of the forces that act on the object, kg m in Newtons (which are S² . )?​

Answers

According to Newton's Second Law of Motion, the sum of forces acting on the object is 1.6 N, calculated by multiplying the mass (0.08 kg) by the acceleration (20 m/s²).

According to Newton's Second Law of Motion, the sum of the forces acting on an object with mass m and acceleration a is equal to ma.

In this case, the object has a mass of 80 grams (or 0.08 kg) and an acceleration of 20 meters per second squared. To find the sum of the forces, we need to multiply the mass by the acceleration, using the formula F = ma.

Substituting the given values, we get F = 0.08 kg * 20 m/s², which simplifies to F = 1.6 kg·m/s².
To express this value in Newtons, we need to convert kg·m/s² to N, using the fact that 1 N = 1 kg·m/s².

Therefore, the sum of the forces acting on the object is 1.6 N.

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C
A person swims 6.4 meters per
second north while being
pushed by a current moving
west at 2.1 meters per second.
What is the magnitude of the
swimmer's resultant vector?
Hint: Draw a vector diagram.
R= [?] m/s

Answers

The magnitude of the swimmer's resultant vector is 6.74 m/s

What is resultant vector?

A resultant vector is defined as a single vector that produces the same effect as is produced by a number of vectors collectively.

The rate of change of displacement is known as the velocity.

Since the two velocities are acting perpendicular to each other , we are going to use Pythagoras theorem.

Pythagoras theorem can be expressed as;

c² = a² + b²

R² = 6.4² + 2.1²

R² = 40.96 + 4.41

R² = 45.37

R= √ 45.37

R = 6.74 m/s

Therefore the the resultant velocities is 6.74 m/s.

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A particle is moving along the curve y=4√(4x+5). As the particle passes through the point (1,12), its x-coordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

Answers

To find the rate of change of the distance from a particle to the origin, let's start with the given information:

1. The equation of the curve is y = f(x), and the distance of the particle from the origin O(0,0) is given by d = √(x² + y²).

2. Differentiating both sides of the equation with respect to t, where t represents time:

- Differentiating x² + y² with respect to t gives 2x * (dx/dt) + 2y * (dy/dt).

3. The particle passes through the point (1,12) at t = 0.

Also, when x = 1 and y = 12, we know that dx/dt = 4.

Next, we need to determine the value of (dy/dt) when the particle is moving along the curve y = 4√(4x + 5):

2y * (dy/dt) = 16 * 4 * (dx/dt)

Simplifying further:

dd/dt = (8 + 128) / √(1² + 12²)

dd/dt ≈ 136 / 13

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Find a ᵟ > 0 that works with ᵋ= 0.02 such that if |x-2| < ᵟ then |6x-12|< ᵋ

Answers

The required positive value that works with ε = 0.02. Answer: δ = ε/6 = 0.02/6 = 0.0033 (approx).

Given ε = 0.02, finding δ > 0 such that inequality |x - 2| < δ results in inequality |6x - 12| < ε.

Let |x - 2| < δ.Then, |6x - 12| < ε can be written as |6(x - 2)| < ε. Given |x - 2| < δ .Hence, |6(x - 2)| < 6δ. Finding δ such that 6δ < ε or δ < ε/6. Let δ = ε/6. Then, we have |6(x - 2)| < 6δ = 6(ε/6) = ε. Hence, if |x - 2| < ε/6 then |6x - 12| < ε. Thus, taking δ = ε/6 as the required positive value that works with ε = 0.02. Answer: δ = ε/6 = 0.02/6 = 0.0033 (approx).

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Let f(x)=6x−74x−6​. Evaluate f′(x) at x=6 f′(6)=____

Answers

The value of f'(6) is undefined.

To evaluate f'(x) at x = 6, we need to find the derivative of the function f(x) = (6x - 7) / (4x - 6). However, in this case, the derivative is undefined at x = 6 due to a vertical asymptote in the denominator.

Let's calculate the derivative of f(x) using the quotient rule:

f'(x) = [(4x - 6)(6) - (6x - 7)(4)] / (4x - 6)^2

Simplifying this expression, we get:

f'(x) = (24x - 36 - 24x + 28) / (4x - 6)^2

      = -8 / (4x - 6)^2

Now, if we substitute x = 6 into the derivative expression, we get:

f'(6) = -8 / (4(6) - 6)^2

     = -8 / (24 - 6)^2

     = -8 / 18^2

     = -8 / 324

Therefore, f'(6) is equal to -8/324. However, it is important to note that this value is undefined since the denominator of the derivative expression becomes zero at x = 6.

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The probability distribution of the sample mean is called the:
a. random variation
b. central probability distribution
c. sampling distribution of the mean
d. standard error

Answers

c. sampling distribution of the mean

Question 7: Let X be a random variable uniformly distributed between 0 and 1 . Let also Y=min(X,a) where a is a real number such that 0

Answers

Expected Value of X: E[X] = 1/2. Variance of X: Var[X] = 1/12. Since X is uniformly distributed between 0 and 1, the expected value (E[X]) can be calculated as the average of the endpoints of the distribution:

To find the expected value and variance of X and Y, we will compute each one separately.

Expected Value of X:

E[X] = (0 + 1) / 2 = 1/2

Variance of X:

The variance (Var[X]) of a uniform distribution is given by the formula:

Var[X] =[tex](b - a)^2 / 12[/tex]

In this case, since X is uniformly distributed between 0 and 1, the variance is:

Var[X] = [tex](1 - 0)^2 /[/tex]12 = 1/12

Expected Value of Y:

To calculate the expected value of Y, we consider two cases:

Case 1: If a < 1/2

In this case, Y takes on the value of a, since the minimum of X and a will always be a:

E[Y] = E[min(X, a)] = E[a] = a

Case 2: If a ≥ 1/2

In this case, Y takes on the value of X, since the minimum of X and a will always be X:

E[Y] = E[min(X, a)] = E[X] = 1/2

Variance of Y:

To calculate the variance of Y, we also consider two cases:

Case 1: If a < 1/2

In this case, Y takes on the value of a, which means it has zero variance:

Var[Y] = Var[min(X, a)] = Var[a] = 0

Case 2: If a ≥ 1/2

In this case, Y takes on the value of X, and its variance is the same as the variance of X:

Var[Y] = Var[min(X, a)] = Var[X] = 1/12

Assuming risk-neutrality, the maximum amount an individual would be willing to pay for this random variable is its expected value. Therefore, the maximum amount an individual would be willing to pay for Y is:

Maximum amount = E[Y] = a, if a < 1/2

Maximum amount = E[Y] = 1/2, if a ≥ 1/2

Expected Value of X: E[X] = 1/2

Variance of X: Var[X] = 1/12

Expected Value of Y:

- If a < 1/2, E[Y] = a

- If a ≥ 1/2, E[Y] = 1/2

Variance of Y:

- If a < 1/2, Var[Y] = 0

- If a ≥ 1/2, Var[Y] = 1/12

Maximum amount (assuming risk-neutrality):

- If a < 1/2, Maximum amount = E[Y] = a

- If a ≥ 1/2, Maximum amount = E[Y] = 1/2

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Let X be a random variable uniformly distributed between 0 and 1 . Let also Y=min(X,a) where a is a real number such that 0<a<1. Find the expected value and variance of X and Y. Assuming that you are risk-neutral.

Let f(x)=x^3−3x−0.5.
Determine whether the Intermediate Value Theorem can be used to show that f(x) has a root in the interval (0,1).
Answer:
Since:
i) f is ______on [0,1],
ii) f(0)= ____, and
iii) f(1)=
the Intermediate Value Theorem ____be used to show that f(x) has a root in the interval (0,1).

Answers

the Intermediate Value Theorem can be used to show that the function f(x) = x^3 - 3x - 0.5 has a root in the interval (0,1) because the function is continuous on the interval and f(0) = -0.5 and f(1) = -2.5 have opposite signs.

The Intermediate Value Theorem states that if a function f(x) is continuous on a closed interval [a, b], and if f(a) and f(b) have opposite signs, then there exists at least one value c in the interval (a, b) such that f(c) = 0.

i) Checking the function's behavior on [0,1]:

To determine if f(x) is continuous on the interval [0,1], we need to check if it is continuous and defined for all values between 0 and 1. Since f(x) is a polynomial function, it is continuous for all real numbers, including the interval (0,1).

ii) Evaluating f(0):

f(0) = (0)^3 - 3(0) - 0.5 = -0.5

iii) Evaluating f(1):

f(1) = (1)^3 - 3(1) - 0.5 = -2.5

Since f(0) = -0.5 and f(1) = -2.5 have opposite signs (one positive and one negative), we can conclude that the conditions of the Intermediate Value Theorem are satisfied.

Therefore, the Intermediate Value Theorem can be used to show that the function f(x) = x^3 - 3x - 0.5 has a root in the interval (0,1).

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Express the equations in polar coordinates.

x = 2
5x−7y = 3
x^2+y^2 = 2
x^2+y^2−4x = 0
x^2+y^2+3x−4y = 0

Answers

1. cos(θ) - 25cos(θ) + 7sin(θ) = 0, 2.  r^2 - 4r*cos(θ) = 0, 3. r^2 + 3r*cos(θ) - 4r*sin(θ) = 0. To express the equations in polar coordinates, we need to substitute the Cartesian coordinates (x, y) with their respective polar counterparts (r, θ).

In polar coordinates, the variable r represents the distance from the origin, and θ represents the angle with the positive x-axis.

Let's convert each equation into polar coordinates:

1. x = 25x - 7y

  Converting x and y into polar coordinates, we have:

  r*cos(θ) = 25r*cos(θ) - 7r*sin(θ)

  Simplifying the equation:

  r*cos(θ) - 25r*cos(θ) + 7r*sin(θ) = 0

  Factor out the common term r:

  r * (cos(θ) - 25cos(θ) + 7sin(θ)) = 0

  Dividing both sides by r:

  cos(θ) - 25cos(θ) + 7sin(θ) = 0

2. 3x^2 + y^2 = 2x^2 + y^2 - 4x

  Simplifying the equation:

  x^2 + y^2 - 4x = 0

  Converting x and y into polar coordinates:

  r^2 - 4r*cos(θ) = 0

3. x^2 + y^2 + 3x - 4y = 0

  Converting x and y into polar coordinates:

  r^2 + 3r*cos(θ) - 4r*sin(θ) = 0

These are the expressions of the given equations in polar coordinates.

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5. For an LTI system described by the difference equation: \[ \sum_{k=0}^{N} a_{k} y[n-k]=\sum_{k=0}^{M} b_{k} x[n-k] \] The frequency response is given by: \[ H\left(e^{j \omega}\right)=\frac{\sum_{k

Answers

The frequency response of an LTI system described by the given difference equation can be expressed as:

\[ H(e^{j\omega}) = \frac{\sum_{k=0}^{M} b_k e^{-j\omega k}}{\sum_{k=0}^{N} a_k e^{-j\omega k}} \]

This expression represents the ratio of the output spectrum to the input spectrum when the input is a complex exponential signal \(x[n] = e^{j\omega n}\).

The frequency response \(H(e^{j\omega})\) is a complex-valued function that characterizes the system's behavior at different frequencies. It indicates how the system modifies the amplitude and phase of each frequency component in the input signal.

By substituting the coefficients \(a_k\) and \(b_k\) into the equation and simplifying, we can obtain the specific expression for the frequency response. However, without the specific values of \(a_k\) and \(b_k\), we cannot determine the exact form of \(H(e^{j\omega})\) or its properties.

To analyze the frequency response further, we would need to know the specific values of the coefficients \(a_k\) and \(b_k\) in the difference equation. These coefficients determine the system's behavior and its frequency response characteristics, such as magnitude response, phase response, and stability.

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12. Suppose Mr Smith has the utility function u = ax1 + bx2. His
neighbour Mr Jones has the utility function u = Min [ax1, bx2].
Both have the same income M, and the two goods cost p1 and p2 per
unit

Answers

In terms of utility maximization, Mr. Smith's utility function u = ax1 + bx2 implies that he values both goods x1 and x2 positively, with the coefficients a and b determining the relative importance of each good. On the other hand, Mr. Jones's utility function u = Min[ax1, bx2] suggests that he values the good with the lower price more, as the minimum value between ax1 and bx2 determines his overall utility.

In terms of expenditure, Mr. Smith's utility function does not necessarily lead to a specific expenditure pattern, as it depends on the relative prices of goods x1 and x2. However, Mr. Jones's utility function implies that he will allocate more of his income towards the cheaper good, as it contributes more to his utility. If the price of x1 is lower (p1 < p2), Mr. Jones will allocate more income towards x1. Conversely, if the price of x2 is lower (p2 < p1), Mr. Jones will allocate more income towards x2.

Overall, Mr. Smith's utility function reflects a preference for both goods, while Mr. Jones's utility function reflects a preference for the cheaper good. The specific expenditure patterns of each individual will depend on the relative prices of goods x1 and x2.

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Rewrite the expression in terms of exponentials and simplify the results.
In (cosh 10x - sinh 10x)
O-20x
O In (e^10x – e^-10x)
O-10x
O -10

Answers

The given expression is In (cosh 10x - sinh 10x) and it needs to be rewritten in terms of exponentials. We can use the following identities to rewrite the given expression:

cosh x =[tex](e^x + e^{-x})/2sinh x[/tex]

= [tex](e^x - e^{-x})/2[/tex]

Using the above identities, we can rewrite the expression as follows:

In (cosh 10x - sinh 10x) =[tex](e^x - e^{-x})/2[/tex]

Simplifying the numerator, we get:

In[tex][(e^{10x} - e^{-10x})/2] = In [(e^{10x}/e^{(-10x)} - 1)/2][/tex]

Using the property of exponents, we can simplify the above expression as follows:

In [tex][(e^{(10x - (-10x)}) - 1)/2] = In [(e^{20x - 1})/2][/tex]

Therefore, the expression in terms of exponentials is In[tex](e^{20x - 1})/2[/tex].

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Suppose f(x)=|x|/x. Since f(−2)=−1 and f(2)=1, by the Intermediate Value Theorem there must be some c in (−2,2) so that f(c)=0. What is wrong with this argument?

Answers

The argument fails to consider the non-continuity of the function at x = 0

The argument presented is incorrect due to a misunderstanding of the Intermediate Value Theorem.

The Intermediate Value Theorem states that if a continuous function takes on two different values, such as f(a) and f(b), at the endpoints of an interval [a, b], then it must also take on every value between f(a) and f(b) within that interval.

The theorem does not apply to functions that are not continuous.

In this case, the function f(x) = |x|/x is not continuous at x = 0 because it has a vertical asymptote at x = 0. The function is undefined at x = 0 since the division by zero is not defined.

The function does not satisfy the conditions necessary for the Intermediate Value Theorem to be applicable.

There exists a value c in the interval (-2, 2) such that f(c) = 0 solely based on the fact that f(-2) = -1 and f(2) = 1. The argument fails to consider the non-continuity of the function at x = 0.

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If A,B and C are non-singular n×n matrices such that AB=C , BC=A and CA=B , then ABC=1 .

Answers

If A, B, and C are non-singular n×n matrices such that AB = C, BC = A, and CA = B, then ABC = I, where I is the identity matrix of size n×n.

1. We know that AB = C, BC = A, and CA = B.

2. Let's multiply the first two equations: (AB)(BC) = C(A) = CA = B.

3. Simplifying the expression, we have A(BB)C = B.

4. Since BB is equivalent to [tex]B^2[/tex] and matrices don't always commute, we can't directly cancel out B from both sides of the equation.

5. However, since A, B, and C are non-singular, we can multiply both sides of the equation by the inverse of B, giving us [tex]A(BB)C(B^{(-1)[/tex]) = [tex]B(B^{(-1)[/tex]).

6. Simplifying further, we get [tex]A(B^2)C(B^{(-1)})[/tex] = I, where I is the identity matrix.

7. Multiplying the equation, we have A(BBC)([tex]B^{(-1)[/tex]) = I.

8. Since BC = A (given in the second equation), the equation becomes A(AC)([tex]B^{(-1)[/tex]) = I.

9. Using the third equation CA = B, we have A(IB)([tex]B^{(-1)[/tex]) = I.

10. Simplifying, we get A(I)([tex]B^{(-1)[/tex]) = I.

11. It follows that A([tex]B^{(-1)[/tex]) = I.

12. Finally, multiplying both sides by B, we have  = B.

13.[tex]B^{(-1)[/tex]B is equivalent to the identity matrix, giving us AI = B.

14. Therefore, ABC = I, as desired.

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Find a synchronous solution of the form A cos Qt+ B sin Qt to the given forced oscillator equation using the method of insertion, collecting terms, and matching coefficients to solve for A and B.
y"+2y' +4y = 4 sin 3t, Ω-3
A solution is y(t) =

Answers

The values of A and B are A = -72/61 and B = -20/61. The synchronous solution to the forced oscillator equation is: y(t) = (-72/61) cos(3t) - (20/61) sin(3t)

To find a synchronous solution of the form A cos(Qt) + B sin(Qt) for the given forced oscillator equation, we can use the method of insertion, collecting terms, and matching coefficients. The forced oscillator equation is y" + 2y' + 4y = 4 sin(3t), with Ω = 3.

By substituting the synchronous solution into the equation, collecting terms, and matching coefficients of the sine and cosine functions, we can solve for A and B.

Let's assume the synchronous solution is of the form y(t) = A cos(3t) + B sin(3t). We differentiate y(t) twice to find y" and y':

y' = -3A sin(3t) + 3B cos(3t)

y" = -9A cos(3t) - 9B sin(3t)

Substituting these expressions into the forced oscillator equation, we have:

(-9A cos(3t) - 9B sin(3t)) + 2(-3A sin(3t) + 3B cos(3t)) + 4(A cos(3t) + B sin(3t)) = 4 sin(3t)

Simplifying the equation, we collect the terms with the same trigonometric functions:

(-9A + 6B + 4A) cos(3t) + (-9B - 6A + 4B) sin(3t) = 4 sin(3t)

To have equality for all values of t, the coefficients of the sine and cosine terms must be equal to the coefficients on the right-hand side of the equation:

-9A + 6B + 4A = 0 (coefficients of cos(3t))

-9B - 6A + 4B = 4 (coefficients of sin(3t))

Solving these two equations simultaneously, we can find the values of A and B.

Now, let's solve the equations to find the values of A and B. Starting with the equation -9A + 6B + 4A = 0:

-9A + 4A + 6B = 0

-5A + 6B = 0

5A = 6B

A = (6/5)B

Substituting this into the second equation, -9B - 6A + 4B = 4:

-9B - 6(6/5)B + 4B = 4

-9B - 36B/5 + 4B = 4

-45B - 36B + 20B = 20

-61B = 20

B = -20/61

Substituting the value of B back into A = (6/5)B, we get:

A = (6/5)(-20/61) = -72/61

Therefore, the values of A and B are A = -72/61 and B = -20/61. The synchronous solution to the forced oscillator equation is:

y(t) = (-72/61) cos(3t) - (20/61) sin(3t)

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Suppose
f(x) = x^2/(x-12)^2
Find the intervals on which f is increasing or decreasing.

f is increasing on _______
f is decreasing on _______
(Enter your answer using interval notation.)

Find the local maximum and minimum values of f.

Local maximum values are ______
Local minimum values are _______

Find the intervels of concavity.

f is concave up on ______
f is concave down on ______
(Enter your answer using interval notation.)

Find the inflection points of f.

Infection points are ______ (Enter each inflection point as an ordered pair, like (3,5))

Find the horizontal and vertical asymptotes of f________
Asymptotes are _______

Enter each asymptote as the equation of a line.

Use your answers above to sketch the graph of y=f(x).

Answers

The function f(x) = x^2/(x-12)^2 has increasing intervals on (-∞, 0) ∪ (12, ∞), decreasing intervals on (0, 12), a local minimum at x = 0, a local maximum at x = 12, concavity up on (-∞, 6), concavity down on (6, ∞), and an inflection point at x = 6. The horizontal asymptote is y = 1, and the vertical asymptote is x = 12.

The function f(x) = x^2/(x-12)^2 has certain characteristics in terms of increasing and decreasing intervals, local maximum and minimum values, concavity intervals, inflection points, and asymptotes.

To determine the intervals on which f(x) is increasing or decreasing, we need to analyze the first derivative of f(x). Taking the derivative of f(x) with respect to x, we get f'(x) = 24x/(x - 12)^3. The function is increasing wherever f'(x) > 0 and decreasing wherever f'(x) < 0. Since the derivative is a rational function, we need to consider its critical points. Setting f'(x) equal to zero, we find that the critical point is x = 0.

Next, we need to determine the local maximum and minimum values of f(x). To do this, we analyze the second derivative of f(x). Taking the derivative of f'(x), we find f''(x) = 24(x^2 - 36x + 216)/(x - 12)^4. The local maximum and minimum values occur at points where f''(x) = 0 or does not exist. Solving f''(x) = 0, we find that x = 6 is a potential inflection point.

To determine the intervals of concavity, we examine the sign of f''(x). The function is concave up wherever f''(x) > 0 and concave down wherever f''(x) < 0. From the second derivative, we can see that f(x) is concave up on the interval (-∞, 6) and concave down on the interval (6, ∞).

Lastly, we find the inflection points by checking where the concavity changes. From the analysis above, we can conclude that the function has an inflection point at x = 6.

For horizontal and vertical asymptotes, we observe the behavior of f(x) as x approaches positive or negative infinity. Since the degree of the numerator and denominator are the same, we can find the horizontal asymptote by looking at the ratio of the leading coefficients. In this case, the horizontal asymptote is y = 1. As for vertical asymptotes, we check where the denominator of f(x) equals zero. Here, the vertical asymptote is x = 12.

To summarize, the function f(x) = x^2/(x-12)^2 has increasing intervals on (-∞, 0) ∪ (12, ∞), decreasing intervals on (0, 12), a local minimum at x = 0, a local maximum at x = 12, concavity up on (-∞, 6), concavity down on (6, ∞), and an inflection point at x = 6. The horizontal asymptote is y = 1, and the vertical asymptote is x = 12.

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What is the measure of the minor arc ?

Answers

The measure of the minor arc is a. 62°.The correct option is a. 62°.

To determine the measure of minor arc AC, we need to consider the measure of angle ABC.

Given that angle ABC is 62°, we can conclude that the measure of minor arc AC is also 62°.

This is because the measure of an arc is equal to the measure of its corresponding central angle.

In this case, minor arc AC corresponds to angle ABC, so they have the same measure.

Therefore, option a. 62° is the appropriate response.

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Given: AB=CD; BX is tangent to circle P at B. Explain why BCX=A.
(The figure is not drawn to scale.)

Answers

The equality of segments AB and CD implies that the distances from the center of the circle P to points A and C are equal, leading to the conclusion that angle BCX and angle A are congruent.

To understand why angle BCX is equal to angle A, we need to analyze the properties of tangents and circles.

First, let's consider the tangent line BX and the circle P. By definition, a tangent line to a circle intersects the circle at exactly one point, forming a right angle with the radius drawn to that point. Therefore, angle BXP is a right angle.

Now, let's examine the segment AB, which is equal to segment CD according to the given information. If two chords in a circle are equal in length, they are equidistant from the center of the circle. Since AB = CD, the distances from the center of the circle P to points A and C are equal.

Since angle BXP is a right angle, the line segment XP is the radius of the circle P. Consequently, XP is equidistant from points A and C, meaning that it is also the perpendicular bisector of segment AC.

As a result, segment AC is divided into two equal parts by line XP. This implies that angle BXC and angle AXB are congruent, as they are opposite angles formed by intersecting lines and are subtended by equal chords.

Since angles BXC and AXB are congruent, and angle AXB is denoted as angle A, we can conclude that angle BCX is equal to angle A. Therefore, angle BCX = angle A.

In summary, the equality of segments AB and CD implies that the distances from the center of the circle P to points A and C are equal, leading to the conclusion that angle BCX and angle A are congruent.

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Suppose the derivative of a function f is f′(x) = (x+2)^6(x−5)^7 (x−6)^8.
On what interval is f increasing? (Enter your answer in interval notation.)

Answers

To test the interval [tex]`(6, ∞)`[/tex],

we choose [tex]`x = 7`:`f'(7) = (7+2)^6(7−5)^7(7−6)^8 > 0`.[/tex]

So, `f` is increasing on [tex]`(6, ∞)`.[/tex]The interval on which `f` is increasing is[tex]`(5, 6) ∪ (6, ∞)`[/tex].

So, to find the interval on which `f` is increasing, we can look at the sign of `f'(x)` as follows:

If [tex]`f'(x) > 0[/tex]`,

then `f` is increasing on the interval. If [tex]`f'(x) < 0`[/tex], then `f` is decreasing on the interval.

If `f'(x) = 0`, then `f` has a critical point at `x`.Now, let's find the critical points of `f`:First, we need to find the values of `x` such that [tex]`f'(x) = 0`[/tex].

We can do this by solving the equation [tex]`(x+2)^6(x−5)^7(x−6)^8 = 0`[/tex].

So, `f` is decreasing on[tex]`(-∞, -2)`[/tex].To test the interval [tex]`(-2, 5)`[/tex],

we choose [tex]`x = 0`[/tex]:

[tex]f'(0) = (0+2)^6(0−5)^7(0−6)^8 < 0`[/tex].

So, `f` is decreasing on [tex]`(-2, 5)`[/tex].

To test the interval `(5, 6)`, we choose[tex]`x = 5.5`:`f'(5.5) = (5.5+2)^6(5.5−5)^7(5.5−6)^8 > 0`[/tex].

So, `f` is increasing on[tex]`(5, 6)`[/tex].To test the interval [tex]`(6, ∞)`[/tex],

we choose [tex]`x = 7`:`f'(7) = (7+2)^6(7−5)^7(7−6)^8 > 0`.[/tex]

So, `f` is increasing on [tex]`(6, ∞)`.[/tex]

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Calcilate the fusere valo of 57,000 in 2. 5 years at an interest rale of \( 5 \% \) per year. b. 10 year at an irterest rate of \( 5 \% \) per year e. 5 years at an irterest rate of 10 h per year. a.

Answers

Answer:

Step-by-step explanation: I am sorry but i don't understand a single thing:(

Question 1 The position of a particle moving in a straight line is defined by: x = 2.0 t^2 - 0.90 t^3 where t is in seconds and x is in meters. Starting at t = 0, what position in meters does the particle turn around? Your Answer:

Answers

The position of the particle at which it turns around is approximately 0.995 meters.

x = 2.0 t^2 - 0.90 t^3

To find out at what position the particle turns around, we need to find the turning point or point of inflection.

This can be done by taking the second derivative of the position function and finding when it is zero.

Second derivative:

dx^2/dt^2 = 4.0 - 5.4t

At the turning point, the second derivative is zero.

dx^2/dt^2 = 0 = 4.0 - 5.4t

=> t = 0.7407 s

Substituting t = 0.7407 s in the original position function, we can find the position at which the particle turns around.

x = 2.0(0.7407)^2 - 0.90(0.7407)^3

≈ 0.995 m

Therefore, the position of the particle at which it turns around is approximately 0.995 meters.

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Write the Maclaurin series for the function f(x) = 3sin(2x).
Calculate the radius of convergence and interval of convergence of the series.

Answers

The Maclaurin series for f(x) = 3sin(2x) is given by f(x) = 6x - (8x^3/3!) + (32x^5/5!) - (128x^7/7!) + ..., with a radius of convergence of R = 1 and an interval of convergence of -1 < x < 1.

The Maclaurin series expansion for the function f(x) = 3sin(2x) can be obtained by using the Maclaurin series expansion for the sine function. The Maclaurin series expansion for sin(x) is given by sin(x) = x - (x^3/3!) + (x^5/5!) - (x^7/7!) + ...  By substituting 2x in place of x, we have sin(2x) = 2x - (2x^3/3!) + (2x^5/5!) - (2x^7/7!) + ...  Since f(x) = 3sin(2x), we can multiply the above series by 3 to obtain the Maclaurin series expansion for f(x): f(x) = 3(2x - (2x^3/3!) + (2x^5/5!) - (2x^7/7!) + ...)

Now let's determine the radius of convergence and interval of convergence for this series. The radius of convergence (R) can be calculated using the formula R = 1 / lim sup (|a_n / a_(n+1)|), where a_n represents the coefficients of the power series.

In this case, the coefficients a_n = (2^n)(-1)^(n+1) / (2n+1)!. The ratio |a_n / a_(n+1)| simplifies to 2(n+1) / (2n+3). Taking the limit as n approaches infinity, we find that lim sup (|a_n / a_(n+1)|) = 1.

Therefore, the radius of convergence is R = 1. The interval of convergence can be determined by testing the convergence at the endpoints. By substituting x = ±R into the series, we find that the series converges for -1 < x < 1.

To summarize, the Maclaurin series for f(x) = 3sin(2x) is given by f(x) = 6x - (8x^3/3!) + (32x^5/5!) - (128x^7/7!) + ..., with a radius of convergence of R = 1 and an interval of convergence of -1 < x < 1.

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Evaluate (x^2+y ∧ fl dx dy, where D is the disk x^2+y^2 < 4.

Hint: Integral in Polar

Answers

The evaluation of the given integral ∬(x^2 + y^2) dxdy over the disk x^2 + y^2 < 4 using polar coordinates is 8π.

To evaluate the integral over the disk x^2 + y^2 < 4, it is advantageous to switch to polar coordinates. In polar coordinates, we have x = rcosθ and y = rsinθ, where r represents the radial distance from the origin and θ represents the angle.

The given disk x^2 + y^2 < 4 corresponds to the region where r^2 < 4, which simplifies to 0 < r < 2. The limits for θ can be taken as 0 to 2π, covering the entire circle.

Next, we need to express the integrand, x^2 + y^2, in terms of polar coordinates. Substituting x = rcosθ and y = rsinθ, we have x^2 + y^2 = r^2(cos^2θ + sin^2θ) = r^2.

Now, we can express the given integral in polar coordinates as ∬r^2 rdrdθ over the region 0 < r < 2 and 0 < θ < 2π.

Integrating with respect to r first, the inner integral becomes ∫[0, 2π] ∫[0, 2] r^3 drdθ.

Evaluating the inner integral ∫r^3 dr from 0 to 2 gives (1/4)r^4 evaluated at 0 and 2, which simplifies to (1/4)(2^4) - (1/4)(0^4) = 4.

The outer integral becomes ∫[0, 2π] 4 dθ, which integrates to 4θ evaluated at 0 and 2π, resulting in 4(2π - 0) = 8π.

Therefore, the evaluation of the given integral ∬(x^2 + y^2) dxdy over the disk x^2 + y^2 < 4 using polar coordinates is 8π.

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A point charge 1 = 25 is at the point P1 = (4, −2,7) and a charge 2 = 60 is at
the point P2 = (−3,4, −2). a) If = 0, find the electric field → at the point
P3 = (1,2,3). b) At what point on the y-axis is x = 0

Answers

The electric field strength at a point is calculated using the formula:

(E → = k * q / r^2 * r →).

a) Calculation of Electric Field → at Point P3 = (1,2,3)

where:

The magnitude of vector r from point P1 = (4, -2, 7) to point P3 = (1, 2, 3) is calculated as:

r = √(x^2 + y^2 + z^2)

r = √((4-1)^2 + (-2-2)^2 + (7-3)^2)

r = √(9 + 16 + 16)

r = √41 m

The electric field → at point P3 is given by:

E → = E1 → + E2 →

E → = 5.41 * 10^9 (i - 4j + 3k) - 12.00 * 10^9 (j - 0.5k) N/C

E → = (-6.59 * 10^9 i) + (-29.17 * 10^9 j) + (9.47 * 10^9 k) N/C

b) Calculation of the Point on the y-axis with x = 0

The electric field at a point (x, y, z) due to a charge Q located at (0, a, 0) on the y-axis is given by:

E → = (1 / 4πε0) * Q / r^3 * (x * i + y * j + z * k)

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Create handouts on identifying skin cancer in multiple languages CREATE TIC TAC TOE GAME IN JAVA, PLEASE DO NOT CHANGE CODE BELOW ONLY FILL THE AREAS THAT SAY STEP 1, 2, 3, IN BOLD:import java.util.Scanner;public class TicTacToe{public static void main(String[] args) {}private char[][] board;private char player; // 'X' or 'O'/* * Instantiate board to be a 3 by 3 char array of spaces.* Set player to be 'X'.*/public TicTacToe() {/** Step 1: create an empty board, with an initial value* of a space (' ')*/}/* * If s represents a valid move, add the current player's symbol to the board and return true.* Otherwise return false.*/public boolean play(String s) {/* Step 2: Fill in here with your own* play logic, and replace the return with you* own.*/ return false; }/** Switches the current player from X to O, or O to X.*/public void switchTurn() {// Step 3: Fill in with your code to toggle between// 'X' and 'O'}/** Returns true if the current player has won the game.* Three in a row, column or either diagonal.* Otherwise, return false.*/public boolean won() {/* Step 5: Fill in the code for the won method. This method* should return true if the current player has 3 in-a-row * in any row, column or diagonal. Otherwise, return false.*/return false; // TODO: replace with your own return statement.}/** Returns true if there are no places left to move*/public boolean stalemate() {/** Step 4: Fill in the code for the stalemate method. It* should return true if there are no more places to move * on the board. Otherwise, return false return false; */return true; // replace with your own return }public char getPlayer() {return player;}public void print() {System.out.println();System.out.println("\t 1 2 3");System.out.println();System.out.println("\tA "+board[0][0]+"|"+board[0][1]+"|"+board[0][2]);System.out.println("\t -----");System.out.println("\tB "+board[1][0]+"|"+board[1][1]+"|"+board[1][2]);System.out.println("\t "+"-----");System.out.println("\tC "+board[2][0]+"|"+board[2][1]+"|"+board[2][2]);System.out.println();}/* * Step 6: Main Method for Final Step - Delete your main method * and uncomment this one. * Runs the game by getting input from the user, making the * appropriate moves, and prints who won or if it was a stalemate. */ /*public static void main(String[] args) {Scanner in = new Scanner(System.in);TicTacToe game = new TicTacToe();System.out.println("Welcome to tic-tac-toe");System.out.println("Enter coordinates for your move following the X and O prompts");while(!game.stalemate()) {//Print the game//Prompt player for their move//Loop while the method play does not return true when given their move.//Body of loop should ask for a different move//If the game is won, call break; //Switch the turn}game.print();if(game.won()){System.out.println("Player "+game.getPlayer()+" Wins!!!!");} else {System.out.println("Stalemate");}} */} what are the three steps for solving a quadratic equation enie Company can produce two types of lamps, the Enlightner and Foglighter. The data on the two lamp models are as follows:Enlightner FoglighterSales volume in units 660 560Unit sales price $ 300 $ 400Unit variable cost 200 240Unit contribution margin $ 100 $ 160It takes one machine hour to produce each product. Total fixed costs for the manufacture of both products are $170,000. Demand is high enough for either product to keep the plant operating at maximum capacity.Assuming that sales mix in terms of dollars remains constant, what is the breakeven point in dollars?Multiple Choice$461,054.$522,830.$334,682.$1,161,884.$505,052. Bramble Corp. has a weighted-average unit contribution margin of $30 for its two products, Standard and Supreme. Expected sales for Bramble are 40000 Standard and 50000 Supreme. Fixed expenses are $2400000. At the expected sales level, Bramble's net income will be a. $(1050000) b. $900000 c. $300000. d. $2700000.