willmoore21
Junior Member
- Joined
- Jan 26, 2012
- Messages
- 75
Hi guys,
I've always had problems converting to polars, mainly because I don't think I understand the fundamentals.
I really don't understand why things like sqrt(1-x^2) = 1 and things like that.
I have a revision question I would like help with, and maybe some links to any useful websites that you guys know.
Question
Use polar coordinates to evaluate
int.int(overR) sqrt(9-x^2-y^2) dA. where R is the region in the first quadrant of a circle within domain x^2+y^2=9.
Now I know that when I sketch this, r goes from 0 to pi/2, but I've no idea how to work out the second limit.
Apologies for no latex.
Will
I've always had problems converting to polars, mainly because I don't think I understand the fundamentals.
I really don't understand why things like sqrt(1-x^2) = 1 and things like that.
I have a revision question I would like help with, and maybe some links to any useful websites that you guys know.
Question
Use polar coordinates to evaluate
int.int(overR) sqrt(9-x^2-y^2) dA. where R is the region in the first quadrant of a circle within domain x^2+y^2=9.
Now I know that when I sketch this, r goes from 0 to pi/2, but I've no idea how to work out the second limit.
Apologies for no latex.
Will