Question

conversion polar to cartesian and cartesian to polar. help!!

Answer 1

(x^2 + y^2)^2 = a^2 (x^2-y^2). the answer is r^2 = a^2 cos2theta.

Answer 2

what is the process?

Answer 3

oh I remember this... double integrals right... got to figure out if it's dydx which is a vertical line and the x limits are on the horizonal and dxdy horizaonal line with vertical y limits

Answer 4

OY! x^2+y^2=r^2

Answer 5

yes i did it, substituted it but i cant get the right answer

Answer 6

ok..let me draw it

Answer 7

You have to know the conversions. These are the main ones:
\[x^{2} + y^{2} = r^{2}\]
\[x = rcos \theta\]
\[y = rsin \theta\]
\[\frac{ y }{ x }= \tan \theta\]

Answer 8

yes..

Answer 9

ah!