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tix24
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Homework Statement
a) sketch the region in the first octant bounded by the elliptic cylinder 2x^2+y^2=1 and the plane y+z=1.
b) find the volume of this solid by triple integration.
Homework Equations
The Attempt at a Solution
I have already sketched the elliptic cylinder and the plane. my problem arises with the triple integration.
I do not understand if i have to find the volume of the entire solid or the volume of the solid in the first quadrant.
also i am having trouble setting up the integrals because of the ellipse. i tried both cylindrical coordinates and spherical but i get stuck because of the 2.
for spherical coordinates i get stuck at the following: rho^2sin^2(phi)(2cos^2(theta)+sin^2(theta))=1
for cylindrical i get stuck here: 2r^2cos^2(theta)+r^2sin^2(theta)=1