A community for students.
Here's the question you clicked on:
 0 viewing
Isabel☺
 2 years ago
R is bounded by y=0 & y= 4  x^2 .
Isabel☺
 2 years ago
R is bounded by y=0 & y= 4  x^2 .

This Question is Closed

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0suppose it is a parabola: dw:1359970089368:dw

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0solve the problem using Disk Method of Solution. Solid V is generated by revolving the given below region R about the xaxis. Draw R and make a sketch of V: R is bounded by y=0 & y= 4  x^2 .

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0solve for volume dw:1359970762069:dw @Callisto

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1Disk method: dw:1359988516003:dw \[V = \pi \int_a^b r^2 dx = \pi \int_a^by^2dx\] To find a and b, solve the equations y=0 & y= 4  x^2. (The x values you get will be the value of a and b) \[y=4x^2\] Can you do it now?

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0can it be like: dw:1359971017830:dw

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1No.... Solve y=0 and y= 4x^2 => y = 0 = 4x^2 So, now, you need to solve 4x^2 =0 to find a and b.

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0oh yea right im confused wait...

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1^That no was for your first question. You can draw r there.. It doesn't matter where you put the r... since the value of r will be represented by the function y.

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1Can you solve a quadratic question?

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1Yes. So, the integral is \[V = \pi \int_{2}^{2} y^2 dx=\pi \int_{2}^{2} (4x^2)^2 dx\]Can you do it?

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0oh i forgot to square...

Callisto
 2 years ago
Best ResponseYou've already chosen the best response.1You're welcome :) Hope that you know how to do it now!

Isabel☺
 2 years ago
Best ResponseYou've already chosen the best response.0hopefully yes :) thanks again :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.