# Polar Graphing

1. Apr 3, 2008

### Ashford

1. The problem statement, all variables and given/known data
Find the Maximum and Minimum of the following equation.
r=2-2cos($$\Theta$$)

3. The attempt at a solution
Max- 2-2 cos (0$$\pi$$)=0
(0,0$$\pi$$);(0,2$$\pi$$)

Min 2-2cos($$\pi$$)=4
(4,$$\pi$$)

Do i just have these backwards?

2. Apr 3, 2008

### Dick

0<4, so yes, you have them backwards. 4 is the max, 0 is the min.

3. Apr 4, 2008

### HallsofIvy

Staff Emeritus
I'm wondering how you determined that
And, by the way, an equation does not have a max or min- a function does. An equation does not even have a "value" to be max or min.