For the cash flow diagram shown, determine the value of W that will render the equivalent future worth in year 8 equal to $−500 at an interest rate of 10% per year.

The fraction or mixed number in simplest form is -(27)/(32) - :(-(9)/(4)) is -51/32

The expression: -(27)/(32) - :(-(9)/(4))

First, let's solve the division sign using the rule of division of two fractions.

(-(27)/(32))/(-(9)/(4))= (-(27)/(32))*(-4/9)

Taking the LCM of 27 and 9 we get, LCM of 27 and 9 = 27

Thus, we get the following expression as:

((-1)*(3^3))/(2^5) * (-4/3^2) = 3/2

Now, substituting this in the given expression, we get:

- (27)/(32) - :(-(9)/(4))= -(27)/(32) - 3/2

Using the LCM of 32 and 2 we get LCM(32, 2) = 32

Thus, we multiply -3/2 by 16/16 to get -24/32.

Then we have

-(27)/(32) - 3/2= -(27)/(32) - 24/32

= -(27+24)/(32)

= -51/32

Therefore, the value of -(27)/(32) - :(-(9)/(4)) is -51/32

in simplest form. In conclusion, the expression -(27)/(32) - :(-(9)/(4)) was solved. We calculated the quotient of two fractions using the rule of division of fractions. The final answer was written as a mixed fraction in simplest form.

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Problem 1) Using a 4-variable K-Map to simplify the function given by Y(A,B,C,D) = ∑m(1,2,3,7,8,9,10,14) is:

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(1,2,3,7,8,9,10,14) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = B'D' + A'BD + A'C'D' + A'CD + AB'C' + AB'D'

Problem 2) Using a 4-variable K-Map to simplify the function given by Y(A,B,C,D) = ∑m(1,6,12,13) is:

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(1,6,12,13) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = A'BD + AC'D

Problem 3) Using a 4-variable K-Map to simplify the function given by Y(A,B,C,D) = (2,3,4,5,6,8,9,10,11,12,13,14,15) is:

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = (2,3,4,5,6,8,9,10,11,12,13,14,15) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = A'BC'D + AB'CD' + AB'CD + ABC'D' + ABCD' + ABCD + A'B'C'D + A'B'CD

Problem 4) Using a 4-variable K-Map to simplify the function given by Y(A,B,C,D) = ∑m(3,6,7,8,10,11,12) is:

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(3,6,7,8,10,11,12) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = A'CD + BCD' + AB'C

Problem 5) Using a 4-variable K-Map with don't cares to simplify the functions given by the following two equations is:

The function Y() is the function to simplify, the function d() is the list of don't care conditions.

Y(A,B,C,D) = ∑m(1,2,3,6,8,10,14)

d(A,B,C,D) = ∑m(0,7)

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(1,2,3,6,8,10,14) with don't care condition ∑m(0,7) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = A'B' + A'CD' + B'CD + AB'C

Problem 6) Using a 4-variable K-Map with don't cares to simplify the functions given by the following two equations is:

The function Y() is the function to simplify, the function d() is the list of don't care conditions.

Y(A,B,C,D) = ∑m(2,3,4,5,6,7,11)

d(A,B,C,D) = ∑m(1,10,14,15)

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(2,3,4,5,6,7,11) with don't care condition ∑m(1,10,14,15) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = B'CD + AB'D

Problem 7) Using a 4-variable K-Map with don't cares to simplify the functions given by the following two equations is:

The function Y() is the function to simplify, the function d() is the list of don't care conditions.

Y(A,B,C,D) = ∑m(2,3,4,5,6,7,11)

d(A,B,C,D) = ∑m(1,9,13,14)

A 4-variable K-map is as shown below

A B C D/BCD 00 01 11 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Y(A,B,C,D) = ∑m(2,3,4,5,6,7,11) with don't care condition ∑m(1,9,13,14) is represented in the K-Map as follows.

Therefore, Y(A,B,C,D) = B'CD + AB'C + A'BCD'

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1. Regular Gross Pay: $360 2.Overtime Pay: $40.50 3.Total Pay for the Week: $400.5 4. Annual Salary: $11,478

5. Semi-Monthly Salary: $478.25.

Here are the solutions to the given problems:

1. Regular Gross PayScarlet worked a 40-hour week at $9 per hour.

Regular gross pay of Scarlet= $9 × 40= $360

2. Overtime PayScarlet worked 43 hours in total but 40 hours of the week is paid as regular.

So, she has worked 43 - 40= 3 hours as overtime. Scarlet receives time and a half pay for each hour of overtime that she works. Therefore, overtime pay of Scarlet= $9 × 1.5 × 3= $40.5 or $40.50

3.Total Pay for the Week The total pay of Scarlet for the week is the sum of her regular gross pay and overtime pay.

Total pay of Scarlet for the week= $360 + $40.5= $400.5

4. Annual SalaryJohn's weekly salary is $478.25.

There are two pay periods in a month, so he will receive his salary twice in a month.

Total earnings of John in a month= $478.25 × 2= $956.5 Annual salary of John= $956.5 × 12= $11,478

5. Semi-Monthly SalaryJohn's semi-monthly salary is his annual salary divided by 24, since there are two semi-monthly pay periods in a year. Semi-monthly salary of John= $11,478/24= $478.25.

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Answer:

3h³ - h² - 10h

Step-by-step explanation:

(5h​³​​−8h)+(−2h​​³−h​²-2h)

= 5h³ - 8h - 2h³ - h² - 2h

= 3h³ - h² - 10h

So, the answer is  3h³ - h² - 10h

Answer:

--------------------------

Simplify the expression in below steps:

Based on the given data, the solution to the system of equations is x1 = 5, x2 = 7, x3 = -8, and x4 = -1.

To solve the system of equations using an augmented matrix, we can perform row operations to transform the augmented matrix into row-echelon form or reduced row-echelon form. Let's denote the variables as x1, x2, x3, and x4.

The given system of equations is:

x1 + x2 + 2x3 + x4 = 3

x1 + 2x2 + x3 + x4 = 2

x1 + x2 + x3 + 2x4 = 12

2x1 + x2 + x3 + x4 = 4

We can represent this system of equations using an augmented matrix:

[1 1 2 1 | 3]

[1 2 1 1 | 2]

[1 1 1 2 | 12]

[2 1 1 1 | 4]

Now, let's perform row operations to transform the augmented matrix into row-echelon form or reduced row-echelon form. I'll use the Gaussian elimination method:

Subtract the first row from the second row:

R2 = R2 - R1

[1 1 2 1 | 3]

[0 1 -1 0 | -1]

[1 1 1 2 | 12]

[2 1 1 1 | 4]

Subtract the first row from the third row:

R3 = R3 - R1

[1 1 2 1 | 3]

[0 1 -1 0 | -1]

[0 0 -1 1 | 9]

[2 1 1 1 | 4]

Subtract twice the first row from the fourth row:

R4 = R4 - 2R1

[1 1 2 1 | 3]

[0 1 -1 0 | -1]

[0 0 -1 1 | 9]

[0 -1 -3 -1 | -2]

Subtract the second row from the third row:

R3 = R3 - R2

[1 1 2 1 | 3]

[0 1 -1 0 | -1]

[0 0 -1 1 | 9]

[0 -1 -3 -1 | -2]

Subtract three times the second row from the fourth row:

R4 = R4 - 3R2

[1 1 2 1 | 3]

[0 1 -1 0 | -1]

[0 0 -1 1 | 9]

[0 0 0 -1 | 1]

The augmented matrix is now in row-echelon form. Now, we can perform back substitution to find the values of the variables.

From the last row, we have:

-1x4 = 1, which implies x4 = -1.

Substituting x4 = -1 into the third row, we have:

-1x3 + x4 = 9, which gives -1x3 - 1 = 9, and thus x3 = -8.

Substituting x3 = -8 and x4 = -1 into the second row, we have:

1x2 - x3 = -1, which gives 1x2 - (-8) = -1, and thus x2 = 7.

Finally, substituting x2 = 7, x3 = -8, and x4 = -1 into the first row, we have:

x1 + x2 + 2x3 + x4 = 3, which gives x1 + 7 + 2(-8) + (-1) = 3, and thus x1 = 5.

Therefore, the solution to the system of equations is:

x1 = 5, x2 = 7, x3 = -8, and x4 = -1.

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The value of x in each prism:

1) x = 5.47

2) x = 4.2

3) x = 2.1

Given,

Prisms of different shapes.

Now,

1)

Volume of cuboid = l * b *h

l = Length of cuboid

b = Breadth of cuboid

h = Height of cuboid

So,

256 = 3.8 * x * 12.3

x = 5.47

2)

Volume of triangular prism = 1/2 * s * h
s = 1/2* a * b

Substitute the values in the formula,

256 = 1/2 * x * 9.8 * 12.4

x = 4.2

3)

Volume of cylinder = π * r² * h

r = Radius of cylinder.

h = Height of cylinder.

Substitute the values,

256 = π * x² * 18.2

x = 2.1

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Hence, the equations for the tangent lines are y = (1/2)x - 1/2 and y = (1/2)x + 5/2.

To find the equation for each line that is both tangent to the curve y = (x - 1)/(x + 1) and parallel to the line x - 2y = 2, we need to determine the slope of the curve and the slope of the parallel line.

First, let's find the slope of the curve y = (x - 1)/(x + 1). To do this, we can take the derivative of the function with respect to x:

y = (x - 1)/(x + 1)

[tex]y' = [(x + 1)(1) - (x - 1)(1)]/(x + 1)^2[/tex]

[tex]y' = 2/(x + 1)^2[/tex]

The derivative gives us the slope of the curve at any point.

Next, let's find the slope of the line x - 2y = 2. We can rearrange the equation to the slope-intercept form (y = mx + b):

x - 2y = 2

-2y = -x + 2

y = (1/2)x - 1

From the equation, we can see that the slope of the line is 1/2.

Now, we know that the tangent line to the curve should have the same slope as the curve's slope at the point of tangency. Additionally, the tangent line should be parallel to the line x - 2y = 2, which means it should have the same slope as that line (1/2).

Setting the slopes equal to each other, we have:

[tex]2/(x + 1)^2 = 1/2[/tex]

To solve this equation, we can cross-multiply and simplify:

[tex]4 = (x + 1)^2[/tex]

√4 = x + 1

±2 = x + 1

Solving for x, we have two possible values:

2 = x + 1

x = 2 - 1

x = 1

-2 = x + 1

x = -2 - 1

x = -3

Now, let's find the corresponding y-values by substituting the x-values into the original curve equation:

For x = 1:

y = (1 - 1)/(1 + 1)

y = 0/2

y = 0

So, the first point of tangency is (1, 0).

For x = -3:

y = (-3 - 1)/(-3 + 1)

y = -4/-2

y = 2

So, the second point of tangency is (-3, 2).

Therefore, we have two tangent lines to the curve y = (x - 1)/(x + 1) that are parallel to the line x - 2y = 2. The equations of the tangent lines are:

For the point (1, 0):

y - 0 = (1/2)(x - 1)

y = (1/2)x - 1/2

For the point (-3, 2):

y - 2 = (1/2)(x + 3)

y = (1/2)x + 5/2

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The area of the flag as a function of the height is given as;

                         A = (h(2h - 7)) / 2.

A seamstress is designing a triangular flag so that the length of the base of the triangle, in inches, is 7 less than twice the height h.

To express the area of the flag as a function of the height, we use the area formula of the triangle which is given as;

                        A = (1/2) × base × height

where A is the area, base is the length of the base and height is the height of the triangle.

Therefore, we have that;

Base = 2h - 7

Height = h

Substituting the above values in the area formula of the triangle, we get;

A = (1/2) × base × height

A = (1/2) × (2h - 7) × hA

  = (h(2h - 7)) / 2

Therefore, the expression for the area of the flag as a function of the height is given as, A = (h(2h - 7)) / 2.

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The probability that a submission, randomly selected from positive detections, is actually plagiarized is 2% based on the given information of a plagiarism detection system with a 98% true positive rate and a 98% true negative rate.

To find the probability that a submission, randomly selected from positive detections, is actually plagiarized, we can use Bayes' theorem.

Let's define the following events:

A: The submission is actually plagiarized.

B: The submission is detected as positive.

We need to calculate P(A|B), the probability that a submission is plagiarized given that it is detected as positive.

According to Bayes' theorem:

P(A|B) = (P(B|A) * P(A)) / P(B)

P(B|A) = 0.98 (98% true positive rate)

P(A) = 0.02 (2% probability of a submission being plagiarized)

P(B) = ? (To be calculated)

To calculate P(B), we can use the law of total probability. The event B can occur in two ways: either the submission is plagiarized and detected as positive or the submission is not plagiarized and detected as positive.

P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)

We know P(B|A) = 0.98, P(A) = 0.02, and P(B|not A) = 0.98 (98% true negative rate). P(not A) is the complement of P(A), which is 1 - P(A).

P(not A) = 1 - P(A) = 1 - 0.02 = 0.98

Now, we can substitute these values into the equation to find P(B):

P(B) = (0.98 * 0.02) + (0.98 * 0.98)

     = 0.0196 + 0.9604

     = 0.98

Now, we can substitute the values of P(B|A), P(A), and P(B) into the Bayes' theorem equation to find P(A|B):

P(A|B) = (0.98 * 0.02) / 0.98

      = 0.0196 / 0.98

      = 0.02

Therefore, the probability that a submission, randomly selected from positive detections, is actually plagiarized is 0.02 or 2%.

Note: The reliability of the system and the given true positive and true negative rates are crucial in determining this probability.

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Without the specific fit parameter values, it is difficult to provide a mechanistic interpretation. However, in general, the relative meaning of fit parameter values refers to how the values compare to each other in terms of magnitude and direction.

For example, if the fit parameters represent the activity levels of different enzymes, their relative values could indicate the relative contributions of each enzyme to the overall biological process. If one fit parameter has a much higher value than the others, it could suggest that this enzyme is the most important contributor to the process.

On the other hand, if two fit parameters have opposite signs, it could suggest that they have opposite effects on the process.

For example, if one fit parameter represents an activator and another represents an inhibitor, their relative values could suggest whether the process is more likely to be activated or inhibited by a given stimulus.

Overall, the relative meaning of fit parameter values can provide insight into the underlying mechanisms of a biological process and inform further studies and interventions.

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Given that, red pairs: (1.5, y) and (x,4) and [tex]2x + 0.1y = 2.4[/tex] To find the values so that each ordered pair will satisfy the given equation, we need to solve the given system of equations as follows.

[tex]2x + 0.1y = 2.4 are (1.5, - 6) and (1, 4).[/tex]

Substitute (1.5, y) in place of (x,4) in the equation.[tex]2x + 0.1y = 2.42(1.5) + 0.1y = 2.43 + 0.1y = 2.4[/tex]

[tex]2x + 0.1y = 2.4 to get2x + 0.1(4) = 2.42x + 0.4 = 2.4[/tex]

Subtract 0.4 on both side [tex]2x = 2.4 - 0.42x = 2[/tex] Divide by [tex]22/2 = 1[/tex]Substitute the obtained value of x in place of x in the ordered pair (x,4), we get Hence, the values that will satisfy the given equation. [tex]2x + 0.1y = 2.4 are (1.5, - 6) and (1, 4).[/tex]

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The solution is y is less than or equal to -106. The given inequality can be translated as "y - 53 is less than or equal to -159". This means that y decreased by 53 is at most -159.

To solve for y, we need to isolate y on one side of the inequality. We start by adding 53 to both sides:

y - 53 + 53 ≤ -159 + 53

Simplifying, we get:

y ≤ -106

Therefore, the solution is y is less than or equal to -106.

This inequality represents a range of values of y that satisfy the given condition. Specifically, any value of y that is less than or equal to -106 and at least 53 less than -159 satisfies the inequality. For example, y = -130 satisfies the inequality since it is less than -106 and 53 less than -159.

It is important to note that inequalities like this are often used to represent constraints in real-world problems. For instance, if y represents the number of items that can be produced in a factory, the inequality can be interpreted as a limit on the maximum number of items that can be produced. In such cases, it is important to understand the meaning of the inequality and the context in which it is used to make informed decisions.

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the hexadecimal number 3AB8 (base 16) is equivalent to 0011 1010 1011 1000 in binary (base 2).

The above solution comprises more than 100 words.

The hexadecimal number 3AB8 can be converted to binary in the following way.

Step 1: Write the given hexadecimal number3AB8

Step 2: Convert each hexadecimal digit to its binary equivalent using the following table.

Hexadecimal Binary

0 00001

00012

00103

00114 01005 01016 01107 01118 10009 100110 101011 101112 110013 110114 111015 1111

Step 3: Combine the binary equivalent of each hexadecimal digit together.3AB8 = 0011 1010 1011 1000,

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To solve the given partial differential equation, we can start by factoring the operator. The equation can be written as:

(u_tt - 3u_xt + 2u_zx) = 0

Factoring the operator, we have:

(u_t - u_x)(u_t - 2u_z) = 0

Now, we have two separate equations:

1. u_t - u_x = 0

2. u_t - 2u_z = 0

Let's solve these equations one by one.

1. u_t - u_x = 0:

This is a first-order linear partial differential equation. We can use the method of characteristics to solve it. Let's introduce a characteristic parameter s such that dx/ds = -1 and dt/ds = 1. Integrating these equations, we get x = -s + a and t = s + b, where a and b are constants.

Now, we express u in terms of s:

u(x, t) = f(s) = f(-s + a) = f(x + t - b)

So, the general solution to the equation u_t - u_x = 0 is u(x, t) = f(x + t - b), where f is an arbitrary function.

2. u_t - 2u_z = 0:

This is another first-order linear partial differential equation. Again, we can use the method of characteristics. Let's introduce a characteristic parameter r such that dz/dr = 2 and dt/dr = 1. Integrating these equations, we get z = 2r + c and t = r + d, where c and d are constants.

Now, we express u in terms of r:

u(z, t) = g(r) = g(2r + c) = g(z/2 + t - d)

So, the general solution to the equation u_t - 2u_z = 0 is u(z, t) = g(z/2 + t - d), where g is an arbitrary function.

Combining the solutions of both equations, we have:

u(x, t, z) = f(x + t - b) + g(z/2 + t - d)

where f and g are arbitrary functions.

This is the general solution to the given partial differential equation.

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When two cars are selected at random from 42 cars available with a car rental agency, the probability that both of these cars have GPS navigation systems is 0.4714.

The probability of the first car having GPS is 29/42 and the probability of the second car having GPS is 28/41 (since there are now only 28 cars with GPS remaining and 41 total cars remaining). Therefore, the probability of both cars having GPS is:29/42 * 28/41 = 0.3726 (rounded to four decimal places).

That the car rental agency has 42 cars available, 29 of which have a GPS navigation system. And two cars are selected at random from these 42 cars. Now we need to find the probability that both of these cars have GPS navigation systems.

The probability of selecting the first car with a GPS navigation system is 29/42. Since one car has been selected with GPS, the probability of selecting the second car with GPS is 28/41. Now, the probability of selecting both cars with GPS navigation systems is the product of these probabilities:P (both cars have GPS navigation systems) = P (first car has GPS) * P (second car has GPS) = 29/42 * 28/41 = 406 / 861 = 0.4714 (approx.)Therefore, the probability that both of these cars have GPS navigation systems is 0.4714. And it is calculated as follows. Hence, the answer to the given problem is 0.4714.

When two cars are selected at random from 42 cars available with a car rental agency, the probability that both of these cars have GPS navigation systems is 0.4714.

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The rate of change of the quantity in demand after 105 days is given by:

$$\begin{aligned}[tex]\frac{dD}{dt}\bigg|_{t=105}[/tex]&

= [tex]-\frac{140000}{(2(105)+9)^2}\\ &\approx \boxed{-0.011\ \text{units per day}} \end{aligned}$$[/tex]

The rate of change of the quantity in demand after 105 daysSuppose the demand function for a product is given by D(p)= 70000/p​ where D(p) is the quantity in demand at price p. Also suppose that price is a function of time:

[tex]p=2t+9[/tex] where t is in days.

The rate of change of the quantity in demand with respect to time can be found by differentiating the demand function D(p) with respect to time t:

[tex]$$[/tex]\begin{aligned} D(p) [tex]&[/tex]

=[tex]\frac{70000}{p}\\ &[/tex]

= [tex]\frac{70000}{2t+9} \end{aligned}$$[/tex]

Differentiating both sides of the above equation with respect to t, we get:

$$\begin{aligned} \frac{dD}{dt} &

= [tex]\frac{d}{dt} \left(\frac{70000}{2t+9}\right)\\ &[/tex]

= [tex]-\frac{70000(2)}{(2t+9)^2} \cdot \frac{d}{dt}(2t+9)\\ &[/tex]

= [tex]-\frac{140000}{(2t+9)^2} \end{aligned}$$[/tex]

Therefore, the rate of change of the quantity in demand after 105 days is given by:

$$\begin{aligned}

[tex]\frac{dD}{dt}\bigg|_{t=105}[/tex] &

= [tex]-\frac{140000}{(2(105)+9)^2}\\ &\approx \boxed{-0.011\ \text{units per day}} \end{aligned}$$[/tex]

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Method 4: Here, the square bracket notation is used with the key marks, which is enclosed within quotes. As the key marks is not enclosed within quotes in the dictionary, this method is incorrect.

Hence, the method is incorrect.

The correct methods to obtain the value(s) of the key marks from the given dictionary are as follows:a. `m= student.get('marks')`b. `m= student['marks']`.

Method 1: Here, we use the get() method to obtain the value(s) of the key marks from the dictionary. This method returns the value of the specified key if present, else it returns none. Hence, the correct method is `m= student.get('marks')`.

Method 2: Here, we access the value of the key marks from the dictionary using the square bracket notation. This method is used to directly get the value of the given key.

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The first step in solving this integral is to split it into partial fractions. This can be done using the method of undetermined coefficients.

Using the initial value of y(1) = 7.

When the value of x is 1, the equation becomes y' = 2(1) - 3(7) + 1

= -19y'

= -19 (1.2 - 1) + 7

= -19(0.2) + 7

= 3.8

Thus, y(1.2) = 3.8 + 7

= 10.8

Therefore, y(1.2) = 10.8.

Given the differential equation and the initial values: y' = 2x - 3y + 1,

y(1) = 7; y(1.2)

First, we will use the initial value y(1) = 7,

to determine the value of the constant C.

Substituting x = 1

and y = 7 into the differential equation,

y' = 2(1) - 3(7) + 1

= -19 Thus,

y' = -19.

So we can write the differential equation as:-19 = 2x - 3y + 1

= (2/3)x + (20/3)

So the general solution of the differential equation is: y = (2/3)x + (20/3) + C.

To find the value of the constant C, we use the initial condition y(1) = 7.

Substituting x = 1

and y = 7 into the general solution,

y = (2/3)(1) + (20/3) + C7

= (2/3) + (20/3) + C7

= (22/3) + C Adding -(22/3) to both sides,

7 - (22/3) = C-1/3

= C

Thus, the specific solution to the differential equation is: y = (2/3)x + (20/3) - (1/3)

y = (2/3)x + 19/3

Now we can use this equation to find y(1.2) by substituting x = 1.2:

y(1.2) = (2/3)(1.2) + 19/3y(1.2)

= 0.8 + 6.33y(1.2)

= 7.13Therefore, y(1.2)

= 7.13

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There is no enough evidence to support the researcher's claim that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer, based on this sample of 200 helmets.

The test statistics is -1.414

To test whether the sample supports the researcher's claim that at least 10% of all football helmets have manufacturing flaws, we will use a one-tailed hypothesis test with a significance level of α=0.01.

Hypotheses:

Null hypothesis (H0) : the proportion of helmets with manufacturing flaws is less than or equal to 10%

H0: p <= 0.1

Alternative hypothesis (Ha): the proportion of helmets with manufacturing flaws is greater than 10%:

Ha: p > 0.1

where p is the true proportion of helmets with manufacturing flaws in the population.

We can use the sample proportion, p-hat, as an estimate of the true proportion, and test whether it is significantly greater than 0.1.

The test statistic for this hypothesis test

[tex]z = (p-hat - p0) / \sqrt(p0*(1-p0)/n)[/tex]

where p0 is the null hypothesis proportion (0.1),

n is the sample size (200), and

p-hat is the sample proportion (16/200 = 0.08).

Substitute for the given values

z = (0.08 - 0.1) / [tex]\sqrt[/tex](0.1*(1-0.1)/200)

= -1.414

From a standard normal distribution table, the p-value associated with this test statistic is

p-value = P(Z > -1.414)

= 0.921

Decision:

Since the p-value (0.921) is greater than the significance level (0.01), we fail to reject the null hypothesis.

Therefore, there is no enough evidence to support the researcher's claim that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer, based on this sample of 200 helmets.

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Question is incomplete. Find the complete question below

A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 16 helmets contained such defects. Does this finding support the researcher's claim? Use α=0.01. What is the test statistic? Round-off final answer to three decimal places.

Unless specified, all doors are 3′−0′′×7′−0∗; all windows are 3′−0′′×5′−0′′. To calculate the amount of materials required, we must first find the area of each wall and subtract the area of the openings to obtain the total wall area to be covered. Then we can multiply the total area to be covered by the amount of materials required per square foot. The amount of materials required depends on the type of material used (paint, wallpaper, etc.) and the desired coverage per unit.

The table below provides the total area to be covered for each room, assuming that all walls have the same height of 8 feet. Room dimensions (ft) Doors Windows A12′×12′2 35A210′×10′2 30A310′×12′2 35A48′×10′1 25 Total 320 As per the given data, Unless specified, all doors are 3′−0′′×7′−0∗; all windows are 3′−0′′×5′−0′′. The area of the door is 3′−0′′×7′−0′′= 21 sq ftThe area of the window is 3′−0′′×5′−0′′=15 sq ftThe amount of wall area covered by one door = 3′-0′′ × 7′-0′′ = 21 sq ftThe amount of wall area covered by one window = 3′-0′′ × 5′-0′′ = 15 sq ftTotal wall area to be covered for Room A1 = 2 (12×8) - (2x21) - (3x15) = 140 sq ft. Total wall area to be covered for Room A2 = 2 (10×8) - (2x21) - (2x15) = 116 sq ft.Total wall area to be covered for Room A3= 2 (12×8) - (2x21) - (3x15) = 140 sq ft.Total wall area to be covered for Room A4 = 2 (8×8) - (1x21) - (2x15) = 90 sq ft.Total wall area to be covered for all four rooms = 320 sq ft.

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The explicit solutions for the given initial value problems can be derived using the respective integration techniques, and the initial conditions are utilized to determine the constants of integration.

The given initial value problems (IVPs) are solved to find their explicit solutions. In problem (a), the equation involves the differential terms of \(t\) and \(x\), and the initial condition is provided. In problem (b), the equation contains differential terms of \(t\) and \(x\) along with an exponential term, and the initial condition is given.

(a) To solve the first problem, we separate the variables by dividing both sides of the equation by \(\cos 3x\) and integrating. This gives us \(\int \sin 2t dt = \int \cos 3x dx\). Integrating both sides yields \(-\frac{\cos 2t}{2} = \frac{\sin 3x}{3} + C\), where \(C\) is the constant of integration. Applying the initial condition, we can solve for \(C\) and obtain the explicit solution.

(b) For the second problem, we divide the equation by \(xe^{-t}\) and integrate. This leads to \(\int t dt = \int -e^{-t} dx\). After integrating, we have \(\frac{t^2}{2} = -xe^{-t} + C\), where \(C\) is the constant of integration. By substituting the initial condition, we can determine the value of \(C\) and obtain the explicit solution.

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Consider an integer value, let's say x = 3. For x = 3, the differential equation \(x\frac{{dy}}{{dx}} - y = x^2e^x\) becomes \(3\frac{{dy}}{{dx}} - y = 27e^3\). To solve this differential equation, we can find the integrating factor and proceed with the steps outlined in part (a).

a) To find the integrating factor for the differential equation \(x\frac{{dy}}{{dx}} - y = x^2e^x\), we observe that the coefficient of \(\frac{{dy}}{{dx}}\) is \(x\). Therefore, the integrating factor \(I(x)\) is given by:

\[I(x) = e^{\int x \, dx} = e^{\frac{{x^2}}{2}}\]

Now, we multiply the entire differential equation by the integrating factor:

\[e^{\frac{{x^2}}{2}}(x\frac{{dy}}{{dx}} - y) = e^{\frac{{x^2}}{2}}(x^2e^x)\]

Simplifying the equation gives:

\[\frac{{d}}{{dx}}(e^{\frac{{x^2}}{2}}y) = x^2e^{\frac{{3x}}{2}}\]

Now, we integrate both sides with respect to \(x\):

\[\int \frac{{d}}{{dx}}(e^{\frac{{x^2}}{2}}y) \, dx = \int x^2e^{\frac{{3x}}{2}} \, dx\]

This gives:

\[e^{\frac{{x^2}}{2}}y = \int x^2e^{\frac{{3x}}{2}} \, dx + C\]

Finally, we solve for \(y\) by dividing both sides by \(e^{\frac{{x^2}}{2}}\):

\[y = \frac{{\int x^2e^{\frac{{3x}}{2}} \, dx}}{{e^{\frac{{x^2}}{2}}}} + Ce^{-\frac{{x^2}}{2}}\]

b) For the differential equation \((1+y^2)dx = (x+x^2)dy\), we see that the coefficient of \(\frac{{dy}}{{dx}}\) is \(\frac{{x+x^2}}{{1+y^2}}\). Therefore, the integrating factor \(I(x)\) is given by:

\[I(x) = e^{\int \frac{{x+x^2}}{{1+y^2}} \, dx}\]

To find the integrating factor, we need to solve the integral above. However, this integral does not have a simple closed-form solution. Therefore, we cannot determine the exact integrating factor and proceed with the solution.

c) Similarly, for the differential equation \((y^2-2x^2)dx + x(2y^2-x^2)dy = 0\), the coefficient of \(\frac{{dy}}{{dx}}\) is \(\frac{{x(2y^2-x^2)}}{{y^2-2x^2}}\). We would need to find the integrating factor by solving an integral that does not have a simple closed-form solution. Hence, we cannot determine the exact integrating factor and proceed with the solution.

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Therefore, the point(s) on the graph of [tex]y = x^2 + x[/tex] closest to (2,0) are approximately (-1.118, 0.564), (-1.503, 0.718), and (1.287, 3.471). These points have the minimum distance from the point (2,0) on the graph of [tex]y = x^2 + x.[/tex]

To find the point(s) on the graph of [tex]y = x^2 + x[/tex] closest to the point (2,0), we can use the distance formula. The distance between two points (x1, y1) and (x2, y2) is given by:

d = √[tex]((x2 - x1)^2 + (y2 - y1)^2)[/tex]

In this case, we want to minimize the distance between the point (2,0) and any point on the graph of [tex]y = x^2 + x[/tex]. Therefore, we can set up the following equation:

d = √[tex]((x - 2)^2 + (x^2 + x - 0)^2)[/tex]

To find the point(s) on the graph closest to (2,0), we need to find the value(s) of x that minimize the distance function d. We can do this by finding the critical points of the distance function.

Taking the derivative of d with respect to x and setting it to zero:

d' = 0

[tex](2(x - 2) + 2(x^2 + x - 0)(2x + 1)) / (\sqrt((x - 2)^2 + (x^2 + x - 0)^2)) = 0[/tex]

Simplifying and solving for x:

[tex]2(x - 2) + 2(x^2 + x)(2x + 1) = 0[/tex]

Simplifying further, we get:

[tex]2x^3 + 5x^2 - 4x - 4 = 0[/tex]

Using numerical methods or factoring, we find that the solutions are approximately x ≈ -1.118, x ≈ -1.503, and x ≈ 1.287.

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Inequality stating that there are 8000 sq. m. of land available: Let B be the number of units of house B and C be the number of units of house C.

Therefore,B+C ≤ 8000/200 [Reason: House C requires 200 sq. m. of land]⇒B+C ≤ 40b. Inequality that the engineer has at most 6400 man-hour available for construction:

160B + 256C ≤ 6400c

Inequality stating that the engineer has at least 12 million pesos to spend for materials:

600B + 800C ≤ 12000d

. Let us write down a table to calculate the cost, income and profit as follows:Units of house BLabor Hours per unit of house BUnits of house CLabor Hours per unit of house CTotal Labor HoursMaterial Cost per unit of house BMaterial Cost per unit of house CTotal Material CostIncome per unit of house BIncome per unit of house C

Total IncomeTotal ProfitBC=8000/200-B160CB+256C600000800000+256C12,000,0003,500,0004,000,0003,500,000B+C ≤ 40 160B + 256C ≤ 6400 600B + 800C ≤ 12000 Units of house B requires 160 man-hour and a unit of house C requires 256 man-hour.

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Answer:

Step-by-step explanation:

You want the inequalities that define the shaded region in the given graph.

The graph shows 3 lines, one each with positive, negative, and zero slope.

There are several ways we could write the equations for these lines. We can use the slope-intercept form, as that is probably the most familiar.

The slope-intercept form of the equation of a line is ...

  y = mx + b . . . . . . . where m is the slope, and b is the y-intercept.

The slope is the ratio of "rise" to "run" for the line. We can find these values by counting the grid squares vertically and horizontally between points where the line crosses grid intersections.

The line with positive slope (up to the right) crosses the x-axis at -1 and the y-axis at +1. It has 1 unit of rise and 1 unit of run between those points. Its slope is ...

  m = 1/1 = 1

The line with negative slope (down to the right) crosses the x-axis at x=4 and the y-axis at y=5. It has -5 units of rise for 4 units of run between those points. Its slope is ...

  m = -5/4

The horizontal line has no rise, so its slope is 0. It is constant at y = -2.

As we have already noted, the line with positive slope intersects the y-axis at +1. Its equation will be ...

  y = x +1

The line with negative slope intersects the y-axis at +5. Its equation will be ...

  y = -5/4x +5

The line with zero slope has a y-intercept of -2, so its equation is ...

  y = -2. . . . . . . . . . mx = 0x = 0

The boundary lines are all drawn as solid lines, so the inequality will include the "or equal to" case for all of them.

When shading is below the line, the form of the inequality is y ≤ ( ).

When shading is above the line, the form of the inequality is y ≥ ( ).

Shading is below the two lines with non-zero slope, and above the line with zero slope.

The inequalities are ...

__

Additional comment

The intercept form of the equation for a line is ...

  x/a +y/b = 1 . . . . . . . . . . 'a' = x-intercept; 'b' = y-intercept

Using the intercepts we identified above, the three boundary line equations could be ...

These can be turned to inequalities by considering the shading in either the vertical direction (above/below), or the horizontal direction (left/right).

When the coefficient of y is positive, and the shading is above, the inequality will look like ... y ≥ .... If shading is to the right, and the coefficient of x is positive, the inequality will look like ... x ≥ .... If the shading is reversed or the coefficient is negative (but not both), the direction of the inequality will change.

Considering this, we could write the three inequalities as ...

  x/-1 +y/1 ≤ 1;  x/4 +y/5 ≤ 1;  y/-2 ≤ 1

These could be rearranged to a more pleasing form, but the point here is to give you another way to look at the problem.

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Given mean incubation time of fertilized eggs is 23 days. The incubation times are approximately normally distributed with a standard deviation of 1 day.

(a) Determine the 17th percentile for incubation times:

To find the 17th percentile from the standard normal distribution, we use the standard normal table. Using the standard normal table, we find that the area to the left of z = -0.91 is 0.17,

that is, P(Z < -0.91) = 0.17.

Where Z = (x - µ) / σ , so x = (Zσ + µ).

Here,

µ = 23,

σ = 1

and Z = -0.91x

= (−0.91 × 1) + 23

= 22.09 ≈ 22.

(b) Determine the incubation times that make up the middle 95%.We know that for a standard normal distribution, the area between the mean and ±1.96 standard deviations covers the middle 95% of the distribution.

Thus we can say that 95% of the fertilized eggs have incubation time between

µ - 1.96σ and µ + 1.96σ.

µ - 1.96σ = 23 - 1.96(1) = 20.08 ≈ 20 (Lower limit)

µ + 1.96σ = 23 + 1.96(1) = 25.04 ≈ 25 (Upper limit)

Therefore, the incubation times that make up the middle 95% is 20 to 25 days.

Explanation:

The given mean incubation time of fertilized eggs is 23 days and it is approximately normally distributed with a standard deviation of 1 day.

(a) Determine the 17th percentile for incubation times: The formula to determine the percentile is given below:

Percentile = (Number of values below a given value / Total number of values) × 100

Percentile = (1 - P) × 100

Here, P is the probability that a value is greater than or equal to x, in other words, the area under the standard normal curve to the right of x.

From the standard normal table, we have the probability P = 0.17 for z = -0.91.The area to the left of z = -0.91 is 0.17, that is, P(Z < -0.91) = 0.17.

Where Z = (x - µ) / σ , so x = (Zσ + µ).

Hence, the 17th percentile is x = 22 days.

(b) Determine the incubation times that make up the middle 95%.For a standard normal distribution, we know that,µ - 1.96σ is the lower limit.µ + 1.96σ is the upper limit. Using the values given, the lower limit is 20 and the upper limit is 25.

Therefore, the incubation times that make up the middle 95% is 20 to 25 days.

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The minimum score a student would need to stay out of the group that must take a summer session is 862.4.

We need to find the minimum score that a student needs to avoid being in the bottom 3%.

To do this, we can use the z-score formula:

z = (x - μ) / σ

where x is the score we want to find, μ is the mean, and σ is the standard deviation.

If we can find the z-score that corresponds to the bottom 3% of the distribution, we can then use it to find the corresponding score.

Using a standard normal table or calculator, we can find that the z-score that corresponds to the bottom 3% of the distribution is approximately -1.88. This means that the bottom 3% of students have scores that are more than 1.88 standard deviations below the mean.

Now we can plug in the values we know and solve for x:

-1.88 = (x - 900) / 20

Multiplying both sides by 20, we get:

-1.88 * 20 = x - 900

Simplifying, we get:

x = 862.4

Therefore, the minimum score a student would need to stay out of the group that must take a summer session is 862.4.

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The product function is defined as f(x) = g(x) × h(x), where g(x) and h(x) are two functions of x.

Therefore, by substituting the provided equations in the formula we get: f(x) = [-6x² + 7x - 8] x [0.5x^-2 - 2x^0.5]f(x)

= -3x^(-2) + 12x^(0.5)

+ 7x^(-1) - 28x^(0.5)

- 4x^(-2) + 16x^(1.5)

The rate of change function is the derivative of the function with respect to x.

Hence, the derivative of f(x) is: f'(x) = d/dx [-3x^(-2) + 12x^(0.5)

+ 7x^(-1) - 28x^(0.5) - 4x^(-2)

+ 16x^(1.5)]f'(x)

= 6x^(-3) + 6x^(-0.5) - 7x^(-2) + 14x^(0.5)

+ 8x^(-3) + 24x^(0.5)

The answers are: f(x) = -3x^(-2) + 12x^(0.5) + 7x^(-1) - 28x^(0.5)

- 4x^(-2)

+ 16x^(1.5)f'(x)

= 6x^(-3) + 6x^(-0.5) - 7x^(-2) + 14x^(0.5) + 8x^(-3) + 24x^(0.5)

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Therefore, the probability that a randomly selected customer viewed both Movie A and Movie B is 0.15.

Let's denote the probability of viewing Movie A as P(A), the probability of viewing Movie B as P(B), and the probability of viewing at least one of them as P(A or B).

Given:

P(A) = 0.40 (40% of customers viewed Movie A)

P(B) = 0.25 (25% of customers viewed Movie B)

P(A or B) = 0.50 (50% of customers viewed at least one of the movies)

We want to find the probability of viewing both Movie A and Movie B, which can be represented as P(A and B).

We can use the formula:

P(A or B) = P(A) + P(B) - P(A and B)

Substituting the given values:

0.50 = 0.40 + 0.25 - P(A and B)

Now, let's solve for P(A and B):

P(A and B) = 0.40 + 0.25 - 0.50

P(A and B) = 0.65 - 0.50

P(A and B) = 0.15

Answer: d. 0.15

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The solutions obtained using the first-order linear method are:

y = (-3e^(2x) + 5) / 2 for y > 4

y = (3e^(2x) + 5) / 2 for y < 4

Let's solve the given first-order initial value problem (IVP):

(a) y' = y² - 5y + 4

   y(0) = 1

To solve this equation, we will use both the separable and first-order linear methods.

Separable Method:

Rearranging the equation, we have:

y' = y² - 5y + 4

Dividing both sides by (y² - 5y + 4), we get:

1/(y² - 5y + 4) dy = dt

To integrate both sides, we need to factor the denominator:

1/(y² - 5y + 4) = 1/[(y - 4)(y - 1)]

Using partial fractions, we can express the left side as:

1/(y - 4)(y - 1) = A/(y - 4) + B/(y - 1)

Multiplying both sides by (y - 4)(y - 1), we get:

1 = A(y - 1) + B(y - 4)

Expanding and collecting like terms:

1 = (A + B)y - (A + 4B)

Solving this system of equations, we find A = -1/3 and B = 1/3.

Substituting the partial fractions back into the equation:

1/(y - 4)(y - 1) = -1/3/(y - 4) + 1/3/(y - 1)

Integrating both sides with respect to y &

Using the properties of logarithms and integrating each term:

ln|y - 4| - ln|y - 1| = (-1/3)ln|y - 4| + (1/3)ln|y - 1| + C

Combining the logarithms:

ln|y - 4| - ln|y - 1| = (-1/3)ln|y - 4| + (1/3)ln|y - 1| + C

Using the property of logarithms, we can simplify:

ln|y - 4| - ln|y - 1| = ln|[(y - 4)/(y - 1)]| = (-1/3)ln|y - 4| + (1/3)ln|y - 1| + C

Taking the exponential of both sides:

|[(y - 4)/(y - 1)]| = e^((-1/3)ln|y - 4| + (1/3)ln|y - 1| + C)

|[(y - 4)/(y - 1)]| = [(y - 4)^(-1/3) (y - 1)^(1/3)] e^C

we can represent it as K:

|[(y - 4)/(y - 1)]| = K(y - 4)^(-1/3) (y - 1

)^(1/3)

Now we can solve for y.

Case 1: (y - 4)/(y - 1) > 0

This means both numerator and denominator have the same sign.

(y - 4) > 0 and (y - 1) > 0

y > 4 and y > 1, which simplifies to y > 4

Simplifying the absolute value:

(y - 4)/(y - 1) = K(y - 4)^(-1/3) (y - 1)^(1/3)

Cross-multiplying:

(y - 4) = K(y - 4)^(-1/3) (y - 1)^(1/3)

Dividing both sides by (y - 4)^(1/3) (y - 1)^(1/3):

1 = K(y - 4)^(-4/3)

Since K is a constant, we can rewrite it as K' = 1/K:

1/K' = (y - 4)^(4/3)

Taking both sides to the power of 3/4:

(1/K')^(3/4) = (y - 4)

Simplifying:

K'^(-3/4) = (y - 4)

Case 2: (y - 4)/(y - 1) < 0

(y - 4) < 0 and (y - 1) > 0

y < 4 and y > 1

Simplifying the absolute value:

-(y - 4)/(y - 1) = K(y - 4)^(-1/3) (y - 1)^(1/3)

Cross-multiplying and simplifying:

-(y - 4) = K(y - 4)^(-4/3)

Dividing both sides by (y - 4)^(1/3) (y - 1)^(1/3):

-1 = K(y - 4)^(-1/3)

Multiplying both sides by -1:

1 = K(y - 4)^(1/3)

Taking both sides to the power of 3:

1 = K^(3) (y - 4)

Dividing both sides by K^(3):

1/K^(3) = (y - 4)

Since K is a constant, we can rewrite it as K' = 1/K:

1/K' = (y - 4)

Substituting y = 1 into the solution:

1/K' = (1 - 4)

Simplifying:

1/K' = -3

Therefore, K' = -1/3.

Substituting K' = -1/3 into the solutions:

Case 1: (y - 4)/(y - 1) > 0

(-1/3)^(-3/4) = (y - 4)

Solving for y:

y = (-1/3)^(-3/4) + 4

Simplifying:

-3 = (y - 4)

Solving for y:

y = -3 + 4

y = 1

Therefore, the solution to the IVP is y ≈ 2.4389 when y > 4 and y = 1 when y < 4.

Now, let's solve it using the first-order linear method:

The given equation can be rewritten as:

y' - (y^2 - 5y + 4) = 0

We can solve this using an integrating factor, which is the exponential of the integral of p(x):

Integrating p(x):

∫-(y^2 - 5y + 4) dx = -∫(y^2 - 5y + 4) dx = -[(1/3)y^3 - (5/2)y^2 + 4y] + C

The integrating factor, let's call it μ(x), is given by μ(x) = e^(-∫p(x) dx). Substituting the integral we just calculated:

μ(x) = e^[ -((1/3)y^3 - (5/2)y^2 + 4y) + C ] = e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y)

Now we multiply the original equation by the integrating factor:

e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y) * [y' - (y^2 - 5y + 4)] = 0

This simplifies to:

e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y) * y' - e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y) * (y^2 - 5y + 4) = 0

Differentiating both sides with respect to y:

(e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y)) * y' - (e^(C) / e^((1/3)y^3 - (5/2)y^2 + 4y)) * (2y - 5) = 0

Rearranging terms:

e^(C) * y' - (2y - 5) * e^(C) = 0

This equation is now separable. Dividing through by e^(C):

y' - (2y - 5) = 0

Now we solve the separable equation:

dy/dx = 2y - 5

Separating variables:

dy/(2y - 5) = dx

Integrating both sides:

∫dy/(2y - 5) = ∫dx

Applying the substitution u = 2y - 5:

Simplifying:

ln|2y - 5| = 2x + 2C

Exponentiating both sides:

|2

y - 5| = e^(2x + 2C)

Since e^(2C) is a constant, we can represent it as K:

|2y - 5| = Ke^(2x)

Now we consider the two cases:

Case 1: 2y - 5 > 0

2y - 5 = Ke^(2x)

Solving for y:

y = (Ke^(2x) + 5) / 2

Substituting the initial condition y(0) = 1:

1 = (Ke^0 + 5) / 2

2 = K + 5

K = -3

Substituting K = -3:

y = (-3e^(2x) + 5) / 2

Case 2: 2y - 5 < 0

-(2y - 5) = Ke^(2x)

Solving for y:

2y - 5 = -Ke^(2x)

y = (-Ke^(2x) + 5) / 2

Substituting the initial condition y(0) = 1:

1 = (-Ke^0 + 5) / 2

2 = 5 - K

K = 3

Substituting K = 3:

y = (3e^(2x) + 5) / 2

Learn more about linear method here :-

https://brainly.com/question/29072409

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