# What is the graph of the Cartesian equation #(x^2 + y^2 - 2ax)^2 = 4a^2(x^2 + y^2)#?

##### 1 Answer

Jul 6, 2016

Cardioid

#### Explanation:

Transforming to polar coordinates using the pass equations

we obtain after some simplifications

which is the cardioid equation.

Attached a plot for