# How do you graph #r = 4 cos 3 theta#?

##### 1 Answer

Jul 16, 2018

See graph and explanation.

#### Explanation:

Using

r from 0 to

the equation in Cartesian form for

Here, n = 3 and the Cartesian equation is

#( x^2 +y^2 )^2 = 4 (x^3 - 3 x y^2),

The Socratic graph is immediate.

graph{( x^2 +y^2 )^2 - 4 (x^3 - 3 xy^2)=0[-8 8 -4 4]}