Find the critical point of the function f(x) = x2 – 2x + 7.

Answers

Answer 1

Answer:

[tex]x=1[/tex] is a critical point of the function [tex]f(x).[/tex]

Step-by-step explanation:

[tex]f(x)=x^2-2x+7[/tex]

Differentiate both sides w.r.t. [tex]x[/tex]

[tex]\Rightarrow f'(x)=2x-2[/tex]

Now, [tex]f'(x)=0[/tex]

[tex]\therefore 2x-2=0[/tex]

[tex]\Rightarrow 2x=2[/tex]

[tex]\Rightarrow x=1[/tex]

Hence, [tex]x=1[/tex] is a critical point of the given function.


Related Questions

Which homophone best completes the sentence? Though I prefer to eat fruit, I enjoy vegetables ________. your you’re too two

Answers

Too

Too rhymes with fruit. Two wouldn’t make sense because that’s a number. Your and you’re just do not make sense.

Though I prefer to eat fruit, I enjoy vegetables too.

A homophone is a word that is pronounced the same as another word but differs in meaning.

What are some examples of homophones?

Homophones may consist of two or more words, although pairs are more common than three or more words that sound the same. Examples of homophones that have three words are to, too, and two, and their, there, and they're.

here, we have,

Though I prefer to eat fruit, I enjoy vegetables too.

A homophone is a word that is pronounced the same as another word but differs in meaning.

Learn more about homophones here

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Solve forj.
-j - 9> -6 or -5j + 18 < 19

Answers

Answer:

j < 3

j > -1/5

Step-by-step explanation:

Question 1:

-j - 9 > -6

-j > 3

j < 3

Question 2:

-5j + 18 < 19

-5j < 1

j > -1/5

i>19 is the answer you need

What is the opposite of the opposite of -5?

Answers

probably 5 ..............

Answer:

-5

Step-by-step explanation:

The opposite would be 5, but since we need the opposite of the opposite, the opposite of 5 is -5. Hope this helped and wasn't too confusing!

Consider these shapes.
Shape A

3x^2+ 2
7x2 + 4x + 8
Shape B
3x^2+ 2

If shape B is a square, which polynomial represents the difference of the areas of shape A and shape B?
A. 8x +8x + 12
B. 12x^4+ 12x^3 + 26x^2 + 8x + 12
C. 32x^2 + 8x + 28
D. 30x^4 + 12x^3 + 40x^2 + 8x + 20

Answers

Answer:

The correct answer is B :)

Step-by-step explanation:

The difference in the area of shape A and shape B is option B which is [tex]12x^{4}+12x^{3}+26x^{2} +8x+12[/tex].

What is area of rectangle and square?

Area of rectangle and square is the extent of surface rectangle and square exhibits into them. The area of rectangle is length * breadth and the area of square is side*side.

How to find area?

We have been given the length of shape A=[tex]7x^{2} +4x+8[/tex] and breadth be [tex]3x^{2} +2[/tex] and the side of shape B be [tex]3x^{2} +2[/tex].

Shape A looks like rectangle and shape B looks like square.

So the area becomes:

Area of shape A =[tex](3x^{2} +2) ( 7x^{2} +4x+8)[/tex]

we have to multiply both expressions

=[tex]21x^{4} +12x^{3} +24x^{2} +14x^{2} +8x+16[/tex]

=[tex]21x^{4} +12x^{3} +38x^{2}+8x+16[/tex]

Area of shape B=[tex](3x^{2} +2)(3x^{2} +2)[/tex]

=[tex]9x^{4} +6x^{2} +6x^{2} +4[/tex]

=[tex]9x^{4} +12x^{2} +4[/tex]

Difference=[tex]21x^{4}+12x^{3}+38x^{2} +8x+16-9x^{4} -12x^{2} -4[/tex]

=[tex]12x^{4} +12x^{3}+26x^{2} +8x+12[/tex]

Hence the difference between shape A and shape B is [tex]12x^{4} +12x^{3}+26x^{2} +8x+12[/tex].

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I add 45 to a certain number and then divide the sum by 2 the result is five the original number find the original number​

Answers

Hey there! I'm happy to help!

Let's call this number n. We can create the following equation.

(n+45)/2=5

Let's solve. We multiply both sides by 2.

n+45=10

We subtract 45 from both sides.

n=-35.

Have a wonderful day! :D

Answer:

n=-35

Step-by-step explanation:

R= {(-3, -2), (-3, 0), (-1, 2), (1, 2)}
Select all numbers that are in the domain.
-3
-2,
-1
о
1
2

Answers

domains -3,-1,1
hope this helps

Answer: -3,-1, and 1.

Step-by-step explanation: You are given the relation R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)} The domain of the relation are all possible inputs and the range of the relation are all possible outputs. So, the inputs are : -3,-1,1; and the outputs are : -2,0,2. As a result, the domain is : -3,-1,1; and the range is : -2,0,2.

HELP PLEASE I NEED THIS IN

Answers

Answer:

the degree is about 120

Step-by-step explanation:

b and a is about 60 something and so is b and c so add all that up and you get about 120 degrees.

SOMEONE HELP ME PLEASE ASAP!!!

Answers

Answer:

600

Step-by-step explanation:

0+.80x=60+.70x

-.70x=60-.70x

.10x=60

÷.10=÷.10

C=600

0+.80(600)=480

60+.70(600)=480

The perimeter of a rectangle is 34 units. Its width is 6.56, point, 5 units.

Answers

Answer: equation for length 34- (6.5 times 2)  that whole thing divided by 2

Step-by-step explanation:

You know the width and a rectangle has 2 PAIRS of equal sides so if you know the width you just have to multiply that  by 2  [ to account 4 the other side with the same length] and subtract that from the perimeter! Then you divide that answer by 2 to get what one side's length is!

hope that helped if it was not helpful sorry because i am a first grader :/

please answer or i move down grade again

Answers

Answer:

x is a 33° angle

Step-by-step explanation:

The two angles are supplementary meaning the measure of both angles adds up to 180°. You can tell they are supplementary because the angle is a straight line. so all you need to do is subtact 147 from. 180 to get the measure of x .

Answer:

x+147=180 ( sum of supplementary angle)

or, x = 180-147

or, x = 33

so the value of x is 33°

HELPPPP PLEASEEEEE I NEED THIS ASAP

Answers

Answer:

10:4

Step-by-step explanation:

5:2=10:4 because 5 times 2 is 10,

and 2 times 2 is 4.

So they make up to be 10:4

Point B lies between points A and C on Line segment A C . Let x represent the length of segment AB in inches. The length of line A C is 20 inches. The space between points A and B is labeled x. The space between points B and C is labeled 3 x. Use the segment to complete the statements. The value of x is . The length of Line segment A B in inches is . The length of Line segment B C in inches is .

Answers

AB = x

BC = 3x

AC = 20 inches = AB + BC

Let's plug our values into the equation above.

20 inches = x + 3x

Combine like terms

20 inches = 4x

Divide both sides by 4

5 = x

AB = x = 5 inches

BC = 3x = 3(5) = 15 inches

The value of x is

✔ 5

The length of Line segment A B in inches is

✔ 5

The length of Line segment B C  in inches is

✔ 15

<3

help me out with this question ​

Answers

it’s the 400 voters surveyed
Answer: D) The 400 voters surveyed

The population is the entire set of registered voters (11100) in the city. This is what the election officials care about, so they won't focus on any other city data.

Inside that population, the much smaller sample is generated to try to make an educated guess about what the population will do. In this case, the sample is the 400 people surveyed. If the sample was generated randomly enough, then it should be unbiased to give a good idea of what the population will do.

-5|4x - 4|- 9 = 31.
What’s the answer

Answers

Jahdisnevhdfbwhjcnsvvjxv

Directions: Write an integer for each situation,
1. an 8 degree rise in temperature
2. 47 feet below sea level
3. a 19-yard gain
4. overdrawing an account by $124
5. two strokes below par
6. a 20-foot extension

Answers

Answer with explanation:

In integers , we represent quantity of terms such as rise, above , increment by positive integers whereas its opposite such as fall,  below, decrement is denoted by negative integers.

1. an 8 degree rise in temperature

Required integer = 8

2. 47 feet below sea level

Required integer =  =  -47

3. a 19-yard gain

Required integer =  19

4. overdrawing(taken more money out of account than the account has) an account by $124

Required integer =  - 124

5. two strokes below par

Required integer =   -2

6. a 20-foot extension

Required integer =  20

Find the taylor series generated by f at x = a. f(x) = 1/9-x, a = 3.

Answers

Answer:

The generated Taylor series is;

f(x) = 1/6 + (x-3)/36 + (x-3)^2/216 + (x-3)^3/1296......

Kindly note that the series here is truncated at the third derivative, but if wanted, evaluation could be more than this

Step-by-step explanation:

Here, we are to find the Taylor series generated by f at x = a

Mathematically;

f(x)= 1/(9-x)

The f(a) at this point is calculated below;

f(a) = 1/(9-3) = 1/6

The first derivative is calculated below;

f'(x) = 1/(9-x)^2

f'(3) = 1/6^2 = 36

The second derivative is calculated below;

f''(x) = 2/(9-x)^3

f''(3) = 2/(9-3)^3 = 2/6^3 = 2/216 = 1/108

The third derivative is calculated as follows

f'''(x) = 6/(9-x)^4

f'''(3) = 6/(9-3)^4 = 6/6^4 = 1/216..

The Taylor series is thus given by;

f(x) = f(a) + f'(a) (x-a) + f''(a) (x-a)^2/2! + f'''(a) (x-a)^3/3! +...

Substituting the values of 3 for a at each of the points , we obtain the Taylor series as shown below;

f(x) = 1/6 + (x-3)/36 + (x-3)^2*1/108*1/2 + (x-3)^3*1/216*1/6 +...

f(x) = 1/6 + (x-3)/36 + (x-3)^2/216 + (x-3)^3/1296......

What is the value of x

Answers

Answer: x = 60

Step-by-step explanation: Notice that these two angles are vertical angles.

Whenever two lines intersect, a pair of vertical angle is always formed.

Now, vertical angles are always congruent.

So we can setup the equation 2x + 24 = 144.

Solving from here, we first subtract 24 from both sides to get 2x = 120.

Now dividing both sides by 2, we find that x = 60.

So x = 60.

Answer:

c. 60°

Step-by-step explanation:

[tex](2x +24)\° = 144\°\\\\2x+24\°=144\°[/tex]

Collect like terms and simplify

[tex]2x\° =144\°-24\°\\\\2x\°=120\°[/tex]

Divide both sides of the equation by 2 and simplify

[tex]\frac{2x}{2} = \frac{120}{2} \\\\x =60\°[/tex]

Based on the scatterplot of the transformed data and the residual plot, which type of model is appropriate for estimating print publication each year? A linear model is appropriate because the residual plot does not show a clear pattern. A power model is appropriate because the scatterplot of years and the log of circulation is roughly linear. An exponential model is appropriate because the scatterplot of years and the log of circulation is roughly linear and the residual plot shows no distinct pattern. Both an exponential and a power model would be appropriate because the log of circulation was used to develop the model.

Answers

Answer:

C

Step-by-step explanation:

Answer: c

Step-by-step explanation:

I just took the test and got it correct

A world class sprinter ran 200 m in 22.75s. What was her average speed?
m/s
Enter a number.

Answers

Answer:

8.8

Step-by-step explanation:

speed=distance/time

speed- ?

distance- 200m

time- 22.75s

?=200/22.75

?= 8.791...

round it so that it becomes 8.8

The EPA standard for safe drinking water is a maximum of 1.3 milligrams of copper per liter of water. A water testing firm found 8.3 milligrams of copper in a 5-liter sample drawn from Jim and Sharon LeBlanc's
house. Is the water safe or not? By how much does the amount of copper exceed or fall short of the maximum allowed?

Is the water safe for drinking?

No
Yes

Answers

I think the answer is no

2605.40
Significant digits

Answers

yes indeed significant

please help meee!! 20 points!!!!

Answers

Im pretty sure it’s a cause that’s what said was right for me

Write the complex number 4(cos 60 + i sin 60) in standard form 10. Use DeMoivre's Theorem to find (2+3i)6

Answers

Answer:

a) The standard form of [tex]z = 4\cdot (\cos 60^{\circ}+i\cdot \sin 60^{\circ})[/tex] is [tex]z = 2 + i\cdot 2\sqrt{3}[/tex], b) [tex]z = (2+i\cdot 3)^{6} = 1219.585 + i \cdot 1829.381[/tex].

Step-by-step explanation:

a) The standard form of the complex number is [tex]z = a + i\cdot b[/tex], [tex]\forall \,a,b \in \mathbb{R}[/tex]. If we get that [tex]z = 4\cdot (\cos 60^{\circ}+i\cdot \sin 60^{\circ})[/tex], whose standard form is obtained by algebraic means:

1) [tex]z = 4\cdot (\cos 60^{\circ}+i\cdot \sin 60^{\circ})[/tex] Given

2) [tex]z = (4\cdot \cos 60^{\circ})+i\cdot (4\cdot \sin 60^{\circ})[/tex] Distributive and Associative properties.

3) [tex]z = 2 + i\cdot 2\sqrt{3}[/tex] Multiplication/Result.

The standard form of [tex]z = 4\cdot (\cos 60^{\circ}+i\cdot \sin 60^{\circ})[/tex] is [tex]z = 2 + i\cdot 2\sqrt{3}[/tex].

b) The De Moivre's Theorem states that:

[tex]z = (a+i\cdot b)^{n}= r^{n}\cdot (\cos \theta + i\cdot \sin \theta)[/tex]

Where:

[tex]r =\sqrt{a^{2}+b^{2}}[/tex] and [tex]\theta = \tan^{-1} \left(\frac{b}{a}\right)[/tex].

If we know that [tex]z = (2+i\cdot 3)^{6}[/tex], then:

[tex]r = \sqrt{2^{2}+3^{2}}[/tex]

[tex]r =\sqrt{13}[/tex]

[tex]r \approx 3.606[/tex]

[tex]\theta = \tan^{-1}\left(\frac{3}{2} \right)[/tex]

[tex]\theta \approx 56.310^{\circ}[/tex]

The resulting expression is:

[tex]z = 3.606^{6}\cdot (\cos 56.310^{\circ}+i\cdot \sin 56.310^{\circ})[/tex]

[tex]z = 1219.585+i\cdot 1829.381[/tex]

Therefore, [tex]z = (2+i\cdot 3)^{6} = 1219.585 + i \cdot 1829.381[/tex].

Students are paired in teams for a group science project. The number of hours each student spends working on the group project are recorded on the bar chart below. If Paloma and Abdul are a team, and Ben and Min are a team, how many more hours did Paloma and Abdul spend working on the project combined than Ben and Min?

Answers

Answer:

Paloma and Abdul combined spent 4 hours more working on the project than Ben and Min combined.

Step-by-step explanation:

Note: This question is not complete as the bar chart is not included. The bar chart is therefore included before answering the question. Please, see the attached jpeg file for the bar chart.

The explanation to the answer is now given as follows:

From the bar chart, we have the number of hours each student spends working on the group project as follows:

Numbers of hours spent by Paloma = 21 hours

Numbers of hours spent by Adbul = 18 hours

Numbers of hours spent by Ben = 13 hours

Numbers of hours spent by Min = 22 hours

The number of hours each group spent working on the group project is calculated as follows:

Numbers of hours spent by Paloma and Abdul = Numbers of hours spent by Paloma + Numbers of hours spent by Paloma = 21 hours + 18 hours = 39 hours

Numbers of hours spent by Ben and Min = Numbers of hours spent by Ben + Numbers of hours spent by Min = 13 hours + 22 hours = 35 hours

Th number of hours Paloma and Abdul spend working on the project combined more than Ben and Min combined = Numbers of hours spent by Paloma and Abdul - Numbers of hours spent by Ben and Min = 39 hours - 35 hours = 4 hours

Therefore, Paloma and Abdul combined spent 4 hours more working on the project than Ben and Min combined.

Solve (−3) ⋅ 2. plz i need help

Answers

Answer: -6

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

Rule: When multiplying or dividing two numbers with the same sign (both positive or both negative), the answer is positive. When multiplying or dividing two numbers with different signs (one positive and one negative), the answer is negative.

Here you have a negative number and a positive number. Since their signs are different, the product is negative.

(-3) * 2 = -6

Mrs. Berry’s class organized the lunch orders for their upcoming party in the table below.Lunch Orders for the Class Party
Lunch Choice
Number
Vegetarian Sandwich
3
Turkey Sandwich
7
Pepperoni Pizza
8
Cheese Pizza
10

Which ratio represents the number of orders for pepperoni pizza to cheese pizza?
A.4:5
B.5:4
C.StartFraction 10 Over 8 EndFraction
D.StartFraction 18 Over 10 EndFraction

Answers

Given:

Number  of Vegetarian Sandwich = 3

Number of Turkey Sandwich  = 7

Number  of  Pepperoni Pizza  = 8

Number  of  Cheese Pizza  = 10

To find:

The ratio which represents the number of orders for pepperoni pizza to cheese pizza.

Solution:

The ratio of number of orders for pepperoni pizza to cheese pizza is

[tex]\text{Ratio}=\dfrac{\text{Number of orders for pepperoni pizza}}{\text{number of orders for cheese pizza}}[/tex]

[tex]\text{Ratio}=\dfrac{8}{10}[/tex]

[tex]\text{Ratio}=\dfrac{4}{5}[/tex]

Therefore, the required ratio is 4:5 and option A is correct.

Answer:

4:5 and option A is correct.

Step-by-step explanation:

edge2020

what do you mean by herbivores?​

Answers

Answer:

An animal or insect that only eats vegetation, such as grasses, fruits, leaves, vegetables, roots and bulbs.

Step-by-step explanation:

Answer:

Plant eating dinosaurs

Step-by-step explanation:

Herbivores have the word herb in it which refers to it being a plant eating dinosaur so a carnivore has the word carn which also refers to it being a meat eating dinosaur.

evaluate z+z+z for x =2,y=-3,z=4​

Answers

Answer:

12

Step-by-step explanation:

4+4+4=12

If vector AB = i+7j-2k and B is point (7,4,4). Find A.

Answers

Answer:

A is point ( 6, -3, 6)

Step-by-step explanation:

Here in this question, we are concerned with finding the coordinates of point A.

Since we do not know the coordinates of point A, let’s represent them as (x,y,z)

By vector properties; Mathematically ;

AB = (7,4,4) - (x , y, z)

Thus; AB = (7-x)i + (4-y)j + (4-z)k

From the question, we are told that AB is also i + 7j -2k

By comparison;

(7-x)i = i

7-x = 1

x = 7-1

x = 6

(4-y)j = 7j

4-y = 7

4-7 = y

y = -3

and lastly

(4-z)k = -2k

4-z = -2

4 + 2 = z

z = 6

So the coordinates of A are (6, -3, 6)

grades are due today and im stuck on this question . Any help ?

Answers

Answer: The answer is 17

Step-by-step explanation:

Because math is easy

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