# Calculus

posted by .

Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework:

Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density function p(x,y)= x^2z. (Use Cylindrical Coordinates)

• Calculus -

Cylindrical coordinates are: r, theta, and z. The differential volume element is dV = r dtheta dr rz.

The curved cylinder boundary is the circle 2r^2 = 9, r = 3/sqrt2.

The volume interval for the mass is:

3-2pi-3/sqrt2
S..S..S..r^3 z cos^2(theta)d(theta)dr dz
0--0--0

I have substituted r cos theta for x.
The S's are supposed to be integral signs. The top and bottom rows show tihe integration limits

## Similar Questions

1. ### Algebra

How do I work this problem, it is not a homework problem but a problem similar to a homework problem. I know i need to factor the left side of the problem. here is what I have so far.. x^2-2x+1=7 x^2-2x+1-7=7-7 x^2-2x-6=0 here is where …
2. ### Algenra

How do I work this problem, it is not a homework problem but a problem similar to a homework problem. I know i need to factor the left side of the problem. here is what I have so far.. x^2-2x+1=7 x^2-2x+1-7=7-7 x^2-2x-6=0 here is where …
3. ### Algebra

Can someone please tell me how to solve this problem?
4. ### Math subject Calculus

Hi there I am having some difficulties to solve this problem from my homework package and i don't understand how to approach this problem. Please help me by giving me advice on how to approach this problem. Let z = xsin(x/y), y does …
5. ### Calculus

Hi there i am having some problems trying to do my calculus homework and i really need help on how to show the step to proof the volume of a sphere which is V= 4/3pirsquare. But I have to use triple integral to proof the volume of …
6. ### AP Physic

Hi there I am having a lot of trouble trying to figure out this homework problem and I really need help. This problem is dealing with wave motion and I do not know how to set up the formula to get the correct answer. Please help me …
7. ### AP Physic

Hi there I am having so much problems trying to solve this physic problem and I really need help. Please give me a big hint on how to find the amplitude of this problem because i tried using everything i know and i cannot figure it …
8. ### Calculus

So I'm trying to do my homework on L'Hopital's rule. There's this one problem I have to do where I have to find the limit as x approaches negative infinity of (x^4)(e^x). How do I do this, since it's not in the form f(x)/g(x)?
9. ### Math

The following are the last two problems on my test review. I am trying to study for a test. This is not my homework. I am not expecting anyone to do my homework for me. I just need to get the answers to be able to study and if you …
10. ### Calculus

Hello, I really need help on these two homework problem. >< In problem #1, I believe it is related to the exponential functions and their derivatives section...in Calculus II?

More Similar Questions