# How do you graph #r=2+4costheta# on a graphing utility?

##### 1 Answer

Aug 13, 2018

See the limacon details and graph.

#### Explanation:

0<= r = 2 + 4 cos theta in [ 2 - 4, 2 + 4 ]#

no plotting, for

anticlockwise measurement..

Period of r = period of

Multiply both sides by r and use

Now, the Cartesian form for Socratic graphic utility is obtained.

graph is immediate.

graph{ x^2 + y^2 - 2sqrt ( x^2 + y^2 ) - 4x=0 [ - 6 10 -4 4 ]}