When the graph of any continuous function y = f(x) for a ≤ x ≤ b is rotated about the horizontal line y = L, the volume obtained depends on L. What value of L minimizes the volume in part (c)?

When The Graph Of Any Continuous Function Y = F(x) For A X B Is Rotated About The Horizontal Line Y =

Answers

Answer 1

The value in the part (c) is 1/(b-a) if the graph of any continuous function y = f(x) for a ≤ x ≤ b is rotated about the horizontal line y = L, the volume obtained depends on L.

What is integration?

It is defined as the mathematical calculation by which we can sum up all the smaller parts into a unit.

We have a graph of any continuous function y = f(x) for a ≤ x ≤ b is rotated about the horizontal line y = L.

For part(c)

[tex]\rm V(L) = \int\limits^b_a {\pi(f(x) -L)^2} \, dx\\\\\rm V(L) = \int\limits^b_a {\pi((f(x))^2 -2f(x)+L^2)} \, dx\\\\\rm V(L) = \pi \int\limits^b_a {(f(x))^2} \, dx-2\pi L \int\limits^b_a {f(x)} \, dx +L^2\pi\int\limits^b_a {} \, dx[/tex]

Now finding V'(L)

[tex]\rm V'(L) = -2\pi \int\limits^b_a {f(x)} \, dx+2\pi L \int\limits^b_a {} \, dx[/tex]

[tex]\rm V'(L) = -2\pi \int\limits^b_a {f(x)} \, dx+2\pi L (b-a)[/tex]

Now equation V'(L) to zero; V'(L) = 0

[tex]\rm -2\pi \int\limits^b_a {f(x)} \, dx+2\pi L (b-a)=0[/tex]

[tex]\rm \int\limits^b_a {f(x)} \, dx= L (b-a)[/tex]

[tex]\rm L = \frac{1}{b-a} \int\limits^b_a {f(x)} \, dx[/tex]

The above expression is representing the critical point.

Now finding V''(L)

V''(L) = 2π(b-a) >0 at L

[tex]\rm L = \frac{1}{b-a} \int\limits^b_a {f(x)} \, dx[/tex]   (minimizines the volume)

Thus, the value in the part (c) is 1/(b-a) if the graph of any continuous function y = f(x) for a ≤ x ≤ b is rotated about the horizontal line y = L, the volume obtained depends on L.

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Related Questions

Does the point make the equation true ?

Answers

Answer:

(3, 4) does not make y = .5x + 1.5 true.

Step-by-step explanation:

y = .5x + 1.5

(3, 4)

Substitute 3 for x and 4 for y and see if the two sides of the equation are equal to each other.

4 = .5(3) + 1.54 = 1.5 + 1.54 = 3

Since 4 ≠ 3, the point (3, 4) does not make the equation y = .5x + 1.5 true.

Help help help math math

Answers

Answer:

[tex]x > - 14[/tex]

Step-by-step explanation:

Since the dot in the illustration isn't filled in, that means that x can not be a part of -14, which means it is greater than 14

A cylinder has a height of 15 inches. Its volume is 3,014.4 cubic inches. What is the radius of the cylinder?

Use ​ ≈ 3.14 and round your answer to the nearest hundredth

Answers

Answer:

Radius = 8in

Step-by-step explanation:

[tex] \hookrightarrow \sf \: V = {\pi r}^{2} h[/tex]

Where,

v = 3014.4h = 15π = 3.14

⇢ 3014.4 = (3.14)(r²)(15)

⇢ 3014.4 = (r²)(47.1)

⇢ 3014.4 = 47.1r²

⇢ 3014.4/47.1 = 47.1r²/47.1

⇢ 64 = r²

⇢ r = √64

⇢ r = 8

[tex] \therefore [/tex] The value of radius is 8 inches

What fraction shows what each person gets if 9 friends share 5 apples?

Answers

Answer: 5/9 of an apple

Step-by-step explanation:

Since there are more people than apples, you know that the aples are going to be cut and every person will get less than one apple. You just divide the 5 apples to the 9 people. The simple way is putting the numbers and making it a fraction. In this case, 5/9. 5 apples as the numerator and 9 people as the demoninator.

find the mean of data set between 1-26?

Answers

Answer:

13

Step-by-step explanation:

13 is the number in the very middle of the set.

Another way to find this is to add up all numbers and divide by the total in the data set which in this case would be 26

Im having troubles with the last question, any help?

Answers

the x-intercepts are simply found by setting y = 0 and then solving for "x", now, this equation doesn't factor in nice integers, so let's plug it in the quadratic formula.

[tex]\stackrel{f(x)}{0}~~ = ~~4x^2+10x-7 \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~~~~~~~\textit{quadratic formula} \\\\ 0=\stackrel{\stackrel{a}{\downarrow }}{4}x^2\stackrel{\stackrel{b}{\downarrow }}{+10}x\stackrel{\stackrel{c}{\downarrow }}{-7} \qquad \qquad x= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ x= \cfrac{ - (10) \pm \sqrt { (10)^2 -4(4)(-7)}}{2(4)}\implies x=\cfrac{-10\pm\sqrt{100+112}}{8}[/tex]

[tex]x=\cfrac{-10\pm\sqrt{212}}{8}\implies x=\cfrac{-10\pm 2\sqrt{53}}{8}\implies x=\cfrac{-5\pm \sqrt{53}}{4} \\\\\\ x= \begin{cases} \frac{-5 + \sqrt{53}}{4}\\\\ \frac{-5 - \sqrt{53}}{4} \end{cases}\qquad \qquad x\approx \begin{cases} 0.57\\ -3.07 \end{cases}[/tex]


Help me with this question please anybody

Answers

Answer:

  x = 19

Step-by-step explanation:

The work shown is almost complete. It can be finished by multiplying both sides of the equation by the inverse of the coefficient of x.

  x-coefficient: -1/3

  inverse of x-coefficient = 1/(-1/3) = -3

Then you have ...

  [tex]-3\left(-\dfrac{19}{3}\right)=-3\left(-\dfrac{1}{3}x\right)\\\\19=x\qquad\text{simplify}\\\\\boxed{x=19}[/tex]

A student used the following steps to show that -3(x+4) - 5(x + 3) is equivalent to - 8x + 27:
Step 1: -3x + 12 -5x + 15 - -
Step 2: -3x + – 5x + 12 + 15
- Step 3: -8x + 27
The student made a mistake. In which step did the student first make a mistake, and what is a correct expression for that step?​

Answers

Answer:

Step 1

-3x -12-5x-15 is the correct expression.

Help help help math math math

Answers

Hi!

Slope Formula

[tex]\cfrac{y2-y1}{x2-x1}[/tex]

Y2 and Y1 represent the y-coordinates, and X2 and X1 represent the x-coordinates.

We are given the points:

(4, 6) and (7, 12)

Using this formula, we plug in the given points like so:

[tex]\cfrac{12-6}{7-4}[/tex]

Now we can simplify:

[tex]\cfrac{12-6}{7-4}=\cfrac{6}{3} =2[/tex]

Therefore, your final answer is:

[tex]\cfrac{12-6}{7-4}=2[/tex]

For a similar problem, see:

https://brainly.com/question/16613294

https://brainly.com/question/26951413

Answer:

12 - 6

---------  =2

7 - 6

Step-by-step explanation:

Help help ASAP help help

Answers

To answer wait you put into the big, it would be .28 since when making a percentage a decimal you move the decimal point to the left twice. There is always an invisible decimal after a whole number (ex. 28.0). And to find out what 28% of 140 is you simply do .28 x 140 to find that, which is 39.2.

Hope this helps!

The cost of a mathematics textbook is 25 dollars.
A school gets a 15% discount because it buys 60 books
Calculate the total reduction in price.

Answers

Hello there! Im Tutor Melisa

Solution:
60 × 25 × 15% (Given Conditions)
60 × 25 × 0.15 (Reorder the groups by converting percentages to decimal)
(60 × 0.15) × 25
9 × 25

Answer:
The total reduction in price is 225

Need answer asap pls

Answers

Step-by-step explanation:

Check out the attached photo

. Paul bought 5 books for $30.85. About how much did each book cost? .
ESTIMATE UR ANSWER PLS AND SHOW UR WORKK!

Answers

Answer:

Each book cost about $6.20 per book, or in more general terms, $6 per book.

Step-by-step explanation:

If you round the $30.85 total of 5 books to $31 and divide that by 5, you get an average cost of $6.20 per book.

If you need a more general answer, you could round the $30.85 total of 5 books to $30 and divide that by 5, you get an average cost of $6 per book.

1. The sum of Teresa's and Cathy's weight is
118 pounds. Teresa weighs 26 pounds more
than Cathy. If Teresa's weight is T and Cathy's
weight is C, which of these systems of
equations best represents this relationship?
A) T+C = 118
T= 26
B) T+C = 118
T +26=C
C) T+C=64
T-C= 26
D) T=C + 118
T=C+26
E) None of the above

Answers

Answer:

d

Step-by-step explanation:

E is ththe answer

the first equation should be T + C = 118 and the second equation should be C + 26 = T

none of these equations are correct

Jessica is working on a craft project for school. She is using 2 pieces of ribbon. She has 1/8 of a yard of blue ribbon and 3/4 of a yard of red ribbon. Plot the amount of each ribbon she has on a number line.

Please answer this question fast!! xx

Answers

Answer:

So, draw a number line on a piece of paper. Then, divide it into eight parts and graph the points (I did them in the colors of the ribbons)

Simplify the expression 3x(x – 12x) + 3x2 – 2(x – 2)2. Which statements are true about the process and simplified product? Select three options.

Answers

I don’t see no options? But if you simplify the answer is -30x^2 - 4x + 8 hope it helps

Enter the correct answer in the box.
Write the expression 12-2 in simplest form.

Answers

Answer:

12-2 is 10

Step-by-step explanation:

5 Lian put $3,500 into an investment
account that pays 2% interest compounded
annually. If she makes no additional
deposits or withdrawals, which amount is
closest to the total interest Lian will earn on
this investment at the end of 5 years?

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 &\$3500\\ r=rate\to 2\%\to \frac{2}{100}\dotfill &0.02\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases}[/tex]

[tex]A=3500\left(1+\frac{0.02}{1}\right)^{1\cdot 5}\implies A\approx 3864.28~\hfill \underset{earned~interest}{\stackrel{3864.28~~ - ~~3500}{\approx 364.28}}[/tex]

Angles and Parallel Lines

Answers

Answer:

a = 6

b = 25

Step-by-step explanation:

As alternative angles in a parallel line are equal to each other,

5a = 3a + 12

So, now we can find the value of a by making "a" the subject.

5a - 3a = 12

2a = 12

Divide both sides by 2.

a = 6°

                                                                                                     

And now let us find the value of b.

We know that interior angles in a triangle are added up to 180°.

So,

2b + 4b + 3a + 12 = 180

We can replace a with 6 and then we can make "b" the subject to find the value of b.

Let us solve it now.

2b + 4b + 3 × 6 + 12 = 180

6b + 18 + 12 = 180

6b + 30 = 180

6b = 180 - 30

6b = 150

Divide both sides by 6.

b = 25°

Write the expanded notation for 2,846.079. State the letter of the correct answer.

Answers

Answer:

2000+800+40+6+0.07+0.009

Step-by-step explanation:

Maybe?

The expanded form of the given term 2,846.079 can be written as; (2000+800+40+6+0.07+0.009)

How does scientific notations work?

The number is written in the form  [tex]a \times 10^b[/tex] where we have[tex]1 \leq a < 10[/tex] The number b shows the order, which is the most important figure for which scientific notation is used. It tells us how much order large or small a value is in powers of 10.

We have to write the expanded notation for 2,846.079.

The expanded form of the given term is;

2,846.079 = 2000+800+40+6+0.07+0.009

Hence, The expanded form of the given term 2,846.079 can be written as; (2000+800+40+6+0.07+0.009)

Learn more about scientific notation here:

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what is the color of the sky

Answers

Answer:

Step-by-step explanation:

Reflection of the ocean, blue

The diameters of two circles are 12 and 9 what the difference in square centimeters between the areas of the two circles

Answers

Step-by-step explanation:

Area of circle= π(d/2)²

For 1st Circle, A1= 36π

For 2nd Circle, A2= 81π/4

A1-A2 = 63π/4

π = 22/7

=49.5unit²

The differences in the areas of circles in square centimeters is 49.455

Formula for area of circle

[tex]A = \pi r^{2}[/tex]

Where,

A is the area of circle

r is the radius of circle

and π = 3.14

What is radius of a circle ?

Radius of circle is the distance from the center of the circle to any point on it's circumference. It is calculated as :

[tex]Radius = \frac{diameter}{2}[/tex]

According to the given question

Diameter of one circle is 12cm and diameter of another circle 9cm.

Area of circle with diameter 12 cm = [tex]\pi (\frac{12}{2} )^{2}[/tex] = [tex](3.14)(6)^{2}[/tex] = 113.04 square cm

Area of circle with diameter 9 cm = [tex]\pi( \frac{9}{2} )^{2} =(3.14)(4.5)^{2} = 63.585[/tex] square cm

Therefore,

The difference between the areas of two circles = (113.04 -63.585) square centimeter = 49.455 square centimeter.

Learn more about the area of circle here:

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please help this is very important

Answers

4. sector angle = 120°

area of sector = 120/360* π*r^2

= 1/3 π *36 = 12π = 37.69 cm^2

area of isosceles ∆ = .5*36*sin 120 = 15.58cm^2

area of shaded portion = 37.69 - 15.58= 22.11 cm^2

5. sector area = 90/360 * π * 64 = 16π ft^2

area of right ∆ = 1/2*64= 32ft^2

shaded portion area = 16π-32 = 18.26ft^2

6. sector area = 60/360 π 36 = 6π m^2

triangle area = √3/4 * 36 = 9√3 m^2

shaded area = 18.84 - 9√3 = 3.26 m^2

7. sector area = 45/360*π*18^2 = 40.5 π yd^2

8. sector area = 90/360*π*16 = 64π cm^2

9. sector area = 60/360 * π * 169 = 28.16π m^2

10. sector area = 135/360*π*64 = 24π cm^2

1. circle area = π*5.5^2 = 30.25π cm^2

2. circle area = π*0.85*.85 = .7225π ft^2

3. circle area = π * 1/9 in^2

the car is traveling at 80 kilometers per hour. what is the slope of the line?

Answers

Answer: y=80x

Step-by-step explanation:

It should be 80x ....try that

I will give Brainliest!!!

A collenge student takes out a $7500 loan from a bank. Assuming the student has not started paying back the money, how much does the student owe after 2 years, if the bank charges 3.8% interest each year?

Answers

Answer:

$7897.5

Step-by-step explanation:

..............

Kate did a survey to find the average hand span of the students in her class. She asked the following question:


What is the hand span of each student in the class?


Is Kate's question a statistical question, and why or why not?


Yes, because it asks a question that can be answered correctly

Yes, because it anticipates variability in students' hand spans

No, because it does not ask a question that can be answered correctly

No, because it does not anticipate variability in students' hand spans

Answers

I think it’s A sorry if I’m wrong

The mean of the following data is 20.7. Find the value of p 15 25 25 D 3 10 25 7​

Answers

Answer:

the answer to that question is 5.314

if 10% of my number is 60 what is 100%

Answers

Answer:

600

Step-by-step explanation:

10x60=600

since its 10% you multiply by 10 to get 100%

Solve for X: Enter your answer in the box.

Answers

Answer: 6

Step-by-step explanation:

Put the following in order from least to greatest 0.8, 1/10, 3/100, 0.91

Answers

Answer:

[tex] \frac{ 3 }{100} < \frac{1}{10} < 0.8 < 0.91[/tex]

Step-by-step explanation:

0.8=0.8

1/10=0.1

3/100=0.03

0.91=0.91

Hence required arrangement

0.03,0.1,0.8,0.91

I hope it helped you

Answer:
I'm pretty sure its 0.03,0.1,0.8,0.91

Step-by-step explanation:

i did the assignment too :)

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