would you sketch the curve with the polar equation r = 2cos(2theta), and express the equation in rectangular coordinates, that is what must be represented.
would you sketch the curve with the polar equation r = 2cos(2theta), and express the equation in rectangular coordinates, that is what must be represented.
I've attached the graph of the curve.
As you easily can see you'll need 4 equations to describe this curve by the usual x,y-coordinates.