I'm having trouble with volumes and surface areas.
Hey there, I have some trouble understanding how to find volumes and surface areas using double/triple integrals. It's not a homework or anything, just maybe you can point me into the right direction :).
Here are 2 examples:
Find the surface area delimited by the surface
Find the volume delimited by the surface
1. I used polar coordinates here.
Shouldn't I use spherical coordinates since it has 3 variables ?(x y z).
Later Edit: I forgot the Jacobian in the first example (which is r)
2. Spherical coordinates: this i didn't got at all :-s
I'm really a newbie at this, I could really use some help :-s.