lim x->3 (x^2+2x-1)=14

Prove the statement using E, S (delta) definition. Use proper notation

Answers

Answer 1

The definite value of f(x) when x approaching to 3 is 14

What is limit of function ?

In mathematics, limits are the values that a function (or sequence) approaches when an input (or index) approaches a particular value. Limits are essential for calculus and mathematical analysis, and are used to define continuity, derivatives, and integrals.

Here, the function given as :

f(x) = x^2+2x-1

and it is to find the value of f(x) when x approaching to 3 that is :

[tex]\lim_{x \to 3}[/tex] f(x) = [tex]\lim_{x \to 3}[/tex] x^2+2x-1

Now, substitute x equals to 3 in f(x) to get a definite value of f(x) :

[tex]\lim_{x \to 3}[/tex] f(x) = 3^2+2 x 3 -1

[tex]\lim_{x \to 3}[/tex] f(x)  = 9 + 6 -1

[tex]\lim_{x \to 3}[/tex] f(x) = 14

Therefore, the definite value of f(x) when x approaching to 3 is 14 .

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Related Questions

I'm more sophisticated than my little sister. I save my money in a bank account that pays me 3% interest on the money in the account at the end of each month. (If I take my money out before the end of the month, I don't earn any interest for the month.) I started the account with $50 that I got for my birthday. How much money will I have in the account at the end of 10 months? How many months will it take to have at least $100? Justify your answer with a mathematical model of the problem situation.

Answers

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$50\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ n= \begin{array}{llll} \textit{times it compounds per \underline{month}} \end{array}\dotfill &1\\ t=\underline{months}\dotfill &10 \end{cases} \\\\\\ A=50\left(1+\frac{0.03}{1}\right)^{1\cdot 10} \implies A=50(1.03)^{10}\implies A \approx \text{\LARGE 67.20}[/tex]

well, let's check how long till you'd have $100 first

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\dotfill & \$100\\ P=\textit{original amount deposited}\dotfill &\$50\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ n= \begin{array}{llll} \textit{times it compounds per \underline{month}} \end{array}\dotfill &1\\ t=\underline{months} \end{cases}[/tex]

[tex]100=50\left(1+\frac{0.03}{1}\right)^{1\cdot t} \implies 100=50(1.03)^t\implies \cfrac{100}{50}=1.03^t \\\\\\ 2=1.03^t\implies \log(2)=\log(1.03^t)\implies \log(2)=t\log(1.03) \\\\\\ \stackrel{\textit{about 23 months and 13 days}}{\cfrac{\log(2)}{\log(1.03)}=t\implies \text{\LARGE 23.45}\approx t}[/tex]

Six years ago, Lucia’s age was 1/3 the age she will be in 6 years. How old is Lucia now? Enter an integer.

Answers

Answer:

Lucia is 12 years old now

help me number 2 please

Answers

The following volume quantities are listed below:

a) 2 pints, 1 qt

b) 12 pints, 6 qt

c) 5 pints, 2.5 c

d) 6.75 pints, 3.375 fl oz

How to convert an unit to another by using unit conversions

In this question we must transform a quantity in a unit to another quantity in a unit of the same kind. For instance, if we have a quantity in a mass unit, then we only can convert it into another mass unit.

Herein we have four unit conversion cases for volumes, both pints and quarts are volume units commonly used in the United States. There are the following equivalencies:

1 quart = 2 pints = 4 cups = 32 fluid ounces

Now we proceed to convert each quantity to pints and quarts by cross multiplication:

a) 32 fl oz × 2 pints / 32 fl oz = 2 pints, 32 fl oz × 1 qt / 32 fl oz = 1 qt

b) 24 c × 2 pints / 4 c = 12 pints, 24 c × 1 qt / 4 c = 6 qt

c) 10 c × 2 pints / 4 c = 5 pints, 10 c × 1 qt / 4 c = 2.5 c

d) 108 fl oz × 2 pints / 32 fl oz = 6.75 pints, 108 fl oz × 1 qt / 32 fl oz = 3.375 fl oz

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1/3 divided by 7/9 solution

Answers

Answer:

3/7.

Step-by-step explanation:

1/3 / 7/9

Invert the 7/9 and multipliply:

= 1/3 * 9/7

= 9 / 21

= 3/7

1/3 divided by 7/9 = 3/7.

For fractions, multiplying by the reciprocal is the same as dividing (because it is the reverse operation). The reciprocal of 7/9 is 9/7. Set up an equation and multiply straight across:
(1/3) • (9/7) = 9/21, which can simplify by dividing the numerator and denominator by a common factor of 3. 9 div 3 = 3 and 21 div. 3 = 7.
So the answer is = 3/7.

expand the expression as a product of factors.

(x+y)^5

Answers

Answer: 7+8y

Step-by-step explanation:


A box contains 7 blue marbles, 6 red marbles, 2 white marbles, and 3 black marbles. If one marble is chosen at random, what is the probability that it will be red?
A. 0.11
B. 0.17
C. 0.33
D. 0.39
E. 0.67

Answers

The probability that the chosen marble will be red is, 0.27.

Probability:

Probability is calculated by using the formula,

P(A) = n(A)/n(S)

Where,

P(A) is the probability of an event “A”

n(A) is the number of favorable outcomes.

n(S) is the total number of events in the sample space.

Given,

A box contains 7 blue marbles, 6 red marbles, 2 white marbles, and 3 black marbles.

Here we need to find  If one marble is chosen at random, then what is the probability that it will be red.

According to the formula,

number of favorable outcomes = 6

total number of events in the sample space = 7 + 6 + 2 + 3 = 22.

Then the probability of getting red marbles is,

=> P(A) = 6/22.

It can be simplified as,

=> P(A) = 3/11

=> P(A) = 0.27

Therefore, the probability of getting red marble is 0.27.

Here in the options, the option 0.27 is not present.

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Write the following
numbers in descending
order.
0.741, 0.7041, 0.7412,
0.70411, 0.744

Answers

Answer:

0.744-0.741-0.7412-0.7041-0.70411

Step-by-step explanation:

Answer:

0.7440.74120.7410.704110.7041

Step-by-step explanation:

Decending order- From greatest to least

To order them start with the dight with the highest number in the place that isn't equal. In this case it the 4 in the hundredths place so are top 3 numbers are 0.741, 0.7412, and 0.744. As this point you continue to look at the greatest number when the dights aren't equal so the top three would be ordered 0.744,0.7412

0.744,0.7412, and 0.741. As for the bottom 2 numbers you do the same thing with the top three numbers so the rest of the list is 0.70411 and 0.7041

can someone please help me

Answers

for the first one x = 12

second one is 2

Answer:

x = 12

x = 2

Step-by-step explanation:

Basically the triangles are congruent. Therefore, the sides are equal to each other. Set both equations equal to each other and solve for x.

What is the arithmetic mean between 20 and 56?​

Answers

7 is really
The answer

Answer:

35, the population size is 2.


Find the first five terms of each sequence. a n =-2 n+3

Answers

The formula for estimating the nth term of an arithmetic sequence is:

a n = a₁ + (n-1)d

The first five terms of a n = -2n + 3 = 1, -1, -3, -5, -7

What is meant by arithmetic sequence?

A succession of numbers merged together to make a sequence exists comprehended as an arithmetic sequence.

A series of numbers named an arithmetic progression or arithmetic sequence (AP) contains a constant difference between the terms.

The formula for estimating the nth term of an arithmetic sequence exists:

a n = a₁ + (n-1)d

The four quantities in the formula exist a n, a₁, n, d.

The first 5 terms are a n = -2n + 3

a₁ = -2 + 3 = 1

a2 = -4 + 3 = -1

a3 = -6 + 3 = -3

a4 = -8 + 3 = -5

a5 = -10+3 = -7

Therefore, the first 5 terms of the sequence  be 1, -1, -3, -5, -7.

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5. An empty shipping box weighs 8 ounces. The box is then filled with T-shirts. Each T-shirt
weighs 6 ounces. The equation W= 8 + 6x represents the relationship between the quantities
in this situation, where W is the weight, in grams, of the filled box and x represents the number
of shirts in the box. Name two possible equations

Answers

Answer:

Step-by-step explanation:

W-8=6x

W-6x=8

Three classes have a total of 66 students. The students need to make teams of 7 for a Math competition. How many complete teams can they make?
10 teams
8 teams
3 teams
9 teams

Answers

9 teams
Hope I helped

Can someone please help me out? I don’t really understand the problem.

Answers

Answer:

ok

Step-by-step explanation:

-2x+9=2

dive answer is 3

Answer:

x = 6 and y = 10

Step-by-step explanation:

Substract (-5x+3y=0) from (7x-4y=2)

[tex] \sf \: - 5x + 3y = 0 \\ \sf \: \: \: \: 7x - 4y = 2 \\ = = = = = = = = \\ \sf2x - 1y = 2 \\ = = = = = = = = =[/tex]

Let's solve your system by elimination.

7x−4y=2;2x−1y=2

Multiply the second equation by -4, then add the equations together.

(7x−4y=2)

−4(2x−1y=2)

Becomes:

7x−4y=2

−8x+4y=−8

Add these equations to eliminate y:

−x=−6

Then solve−x=−6for x:

−x=−6

−x/−1 = −6/−1

(Divide both sides by -1)

x=6

Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

7x−4y=2

Substitute6forxin7x−4y=2:

(7)(6)−4y=2

−4y+42=2(Simplify both sides of the equation)

−4y+42+−42=2+−42(Add -42 to both sides)

−4y=−40

−4y/−4 = −40/−4

(Divide both sides by -4)

y=10


Write an equation of the line through each pair of points in slope-intercept form.
(2,4) and (-4,-11)

Answers

The equation of line is:

y = (5/2) x - 11

Given,

Points (x₁, y₁) = (2, 4) and (x₂, y₂) = (-4, -11)

We can find the slope using the equation for slope

m = (y₂ - y₁) / (x₂ - x₁)

   = (-11 -4) / (-4 -2)

   = -15 / - 6

    = 5/2

We know the slope and a point, so we can use point slope form to make an equation

y-y₁ = m(x-x₁)

y - (-4) = 5/2 (x-2)

Distribute

y+4 = 5/2x – 5/2 x 2

y+4 = 5/2x - 5

Add -4 to each side

y +4 -4 = 5/2x – 5 - 4

y = 5/2x - 11

This is in slope intercept form (y= mx-b)

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i need help please n thanks

Answers

So that means that x has to have a value larger than or equal to 2, or -2 as those lines mean absolute value

You buy a new car for $22,000. The value of the
car decreases by 12.5% each year.

Answers

5,500 each year u take 22,000-12.5% and u get 5,500

Answer:

Thus the value of the car decreases by $2,750 every year.... Making it $19,250 in the first year and $16,500 in the second

Step-by-step explanation:

12.5/100×22,000

2750


The sun is at a focus of Earth's elliptical orbit.
a. Find the distance from the sun to the other focus.

Answers

The distance from the sun to the other focus is 5.01 × 10⁹ m.

What is the distance from the sun?

(a) The distance from the center of an ellipse to a focus is an where a is the semi major axis and e is the eccentricity. Thus, the separation of the foci ( in the case of Earth's orbit ) is;

2ae = 2(1.50 × 10¹¹)(0.0167) = 5.01 × 10⁹ m.

(b) To express this in terms of solar radii, we set up a ratio;

(5.01 × 10⁹)/(6.96 × 10⁸) = 7.2

Thus, we can conclude that the distance from the sun to the other focus is 5.01 × 10⁹ m.

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Complete question is;

The Sun's center is at one focus of Earth's orbit. How far from this focus is the other focus, (a) in meters and (b) in terms of the solar radius, 6.96 × 10⁸ m? The eccentricity is 0.0167, and the semimajor axis is 1.50 × 10¹¹ m.

Nicolas has 1400 pokemon cards. Of these cards, 40% are water pokemon and 15% are considered rare pokemon, the rest are rock pokemon. How many rock pokemon cards does Nicolas have? (I have completely forgotten this skill)

Answers

Answer:

630 rock cards

Step-by-step explanation:

aight so 40 % of 1400 is 560 , and 15% of 1400 is 210 . add those and you get 770 . so you got 770 water and rare . you subtract that by 1400 and you got 630 !!

Answer: 476 rock type pokemon cards

Step-by-step explanation: Let's do this! 40% of 1400 is 560, and 15% of 560 is 84. 560 - 84 = 476.


Write an equation of each line in standard form with integer coefficients.
2y = -4x-12

Answers

The equation of the line in standard form of 2y = -4x - 12 is 4x + 2y = -12.

The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.

The standard form of an equation of a line is expressed as ax + by = c, where a and b, if all possible must be integers, are the coefficients of variable x and y, respectively, and c is a constant.

Given the equation 2y = -4x - 12, to write the equation in standard form, arrange the variable(s) in one side and the constant(s) in the other.

2y = -4x - 12

4x + 2y = -12

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In this problem, you will investigate the relationships among three points of concurrency in a triangle.
d. Make a conjecture about the relationships among the circumcenter, centroid, and orthocenter.

Answers

The orthocenter is the point at which three altitudes drawn from the vertices of a triangle to opposite sides intersect. The circumcenter, centroid, and orthocenter are all collinear.

What is the relationship between the centroid circumcenter and orthocenter?

The circumcenter, centroid, and orthocenter are all collinear.

The centroid separates the line connecting the circumcenter and orthocenter in the proportion of 2 :1

i.e, CSOC = 21.

Where, C-Coordinate of the centroid. O-Coordinate of the orthocenter.

The orthocenter is the point at which three altitudes drawn from the vertices of a triangle to opposite sides intersect. A centroid is the point at which the lines drawn from the midpoints of each side of a triangle intersect at the opposite vertex.

Any triangle's orthocenter, centroid, and circumcenter are collinear. The centroid divides the distance between the orthocenter and the circumcenter in a 2:1 ratio. The line connecting these three points is known as the triangle's Euler line. to represent the ABC triangle's circumcircle.

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An aeroplane flies 500km in one hour. How long does it take to f a distance of 10925km? for class 4​

Answers

Answer:

It will take 22 hours

Step-by-step explanation:

10925 ÷ 500 = 21.9 = 22 hours

A pendulum moving in simple harmonic motion is modeled by the function , where s is measured in inches and is measured in seconds. determine the first time when the distance moved is 4 inches.

Answers

The maximum​ displacement, the​ frequency, and the time required for one cycle are 1/5 inch, 1/π Hz and π sec.

What is displacement?

A displacement is a vector in geometry and mechanics that has a length equal to the shortest distance between a point P's initial and final positions. It calculates the length and angle of the net motion, or total motion, in a straight line from the starting point to the destination of the point trajectory. The translation that links the starting point and the ending point can be used to spot a displacement.

Therefore, the instantaneous speed is different from velocity, which is the rate at which the distance traveled along a particular path changes over time. The temporal rate of change of the position vector can also be used to describe velocity.

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What is y-8={3}(x+1)y−8=3(x+1)y, minus, 8, equals, 3, left parenthesis, x, plus, 1, right parenthesis written in standard form?

Answers

The equation written in standard form is expressed as 3x - y = -11

Linear equation in standard form

The standard form of a linear equation is expressed as Ax + By = C

Given the equation below;

y - 8 = 3(x+1)

Expand

y- 8 = 3x + 3

Collect the like terms

y-3x = 3 + 8

y - 3x = 11

-3x + y = 11

3x - y = -11

Hence the equation written in standard form is expressed as 3x - y = -11

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Create Write a real-world situation to explain the
inequality-$15 < $7.

Answers

Answer: Maggie went to the store and bought 3 cartons of organic eggs for $23, and a bag of flour for $7. She had $15 dollars in her bank account. But the checkout total was $30. So the bank charged her credit card of her $15 dollars. Now she has a -$15 dollar fine that needs to be paid to her card.

Step-by-step explanation:

Maggie went to the store and bought 3 cartons of organic eggs for $23, and a bag of flour for $7. She had $15 dollars in her bank account. But the checkout total was $30. So the bank charged her credit card of her $15 dollars. Now she has a -$15 dollar fine that needs to be paid to her card.


Solve the equation. 125x³+216=0 .

Answers

X=-6/5 or x= -1 1/5, x=-1.2

how to do:

5n - 7n = 14

Please show the step by step process! (:

Answers

Answer: n=-7

Step-by-step explanation:

5n - 7n = 14

(5-7)n=14

-2n=14

-2n/(-2)=14/(-2)

n=14/(-2)

n=-7

The equation is,

→ 5n - 7n = 14

Solving for the value of n,

→ 5n - 7n = 14

→ -2n = 14

→ n = -(14//2)

→ [ n = -7 ]

Thus, the value of n is -7.


Simplify.
8√2 / 6-3√8

Answers

 The rationalized expression in general term is given by: (-8 -4√2) / 3

What is rationalization?

  Rationalization is a mathematical operation that allows us to determine or eliminate a root of the denominator of a fraction, so that it can be expressed in linear form, either decimal or integer, by the product of a root.

  As defined above, we must perform a mathematical operation to eliminate the root of the denominator without altering the value.

(8√2 / 6-3√8 ) Multiply by  ( 6+3√8)/( 6+3√8)

(8√2 / 6-3√8 )( 6+3√8)/( 6+3√8)

8√2(6+3√8) / (6-3√8)²  Expand the denominator using the FOIL method.

8√2(6+3√8) / (36 - 18√8 + 18√8 - 72)

8√2(6+3√8) / -36

48√2 + 24√2√8 / -36  ::::.   √8 = 2√2

48√2 + 96 / -36

-12(4√2 + 8) / 12x3

(-8 -4√2) / 3 is the result.

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Which statement correctly describes the inverse of the following function?
12345
A. It is a horizontal shift.
B. It is not a function.
C. It is a function.
D. It is negative.
2
3
4
5
6
7

Answers

It is not a function. which is the correct answer would be option (B)

Given that,

A function is shown in the figure with its domain and range.

To determine the inverse function.

What is the function?

The function is defined as a mathematical expression that defines a relationship between one variable and another variable.

Since the two preimages of the value 5 are present in the domain

So that is why the inverse function of a given function is not possible.

Therefore, It is not a function.

Hence, the correct answer would be option (B)

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The point B(-1,-5) is rotated 90° counterclockwise around the origin. What are the coordinates of the resulting point, B'?

Answers

Answer:

B(5, -1)

Step-by-step explanation:

"When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative." - https://calcworkshop.com/

B(-1, -5), -1 = x, -5=y

B(y, x) = B(-5, -1)

B(-y, x) = B(5, -1)

B(5, -1)

(1+2)+6=1+(2+6) which property is this

Answers

Answer:

Associative.

Step-by-step explanation:

The associative property is the property that means an equation's result will be the same regardless of grouping the factors together or reversing the equation.

e.g

[tex](a - b) \times c = c \times (b-a)[/tex]

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