posted by shylo on .
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)
Please help me with this problem and shoe some steps how to set it up.
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:
S..S..S..r^3 z cos^2(theta)d(theta)dr dz
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