SOLUTION: change to polar form: x^2+y^2= -2x

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Question 1060451: change to polar form: x^2+y^2= -2x
Answer by ikleyn(52908) About Me  (Show Source):
You can put this solution on YOUR website!
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change to polar form: x^2+y^2= -2x
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In polar form  x%5E2+%2B+y%5E2 = r%5E2, x+=+r%2Acos%28alpha%29.

So, the original equation becomes

r%5E2 = -2rcos%28alpha%29,  or, canceling "r" in both sides,

r = -2cos%28alpha%29.


It is the equation in polar form.