posted by Joshua on .
I wanted to confirm that I solved these problems correctly (we had to convert the polar curves to Cartesian equations).
x^2+y^2=2y+2x (a little unsure what do next if this is correct)
I agree with your answers
Nice work on #3
in #2, form
x^2 + y^2 = 2y + 2x you have a circle
you could complete the square, and find its centre and radius in this way ...
x^2 + y^2 - 2y - 2x = 0
x^2 - 2x + 1 + y^2 - 2y + 1 = 2
(x-1)^2 + (y-1)^2 = 2
so centre is (1,1) and radius is √2