00:01
Okay, so the r x y plane is right here.
00:04
Okay, so theta is going to be actually zero to pi.
00:08
Okay, so theta is going to be zero to pi, and then r is going to be from here.
00:16
If we do open this up, x squared plus y squared minus 2y plus 1 is equal to 1.
00:25
1 cancels out, and this is r squared, so this is 2r sine theta.
00:31
R cancels out, so r is going to change from zero to 2r sine theta.
00:38
I mean, no r, sorry, 2 sine theta.
00:44
And z is changing from zero to this, which is r squared...