Originally Posted by

**Deimos** So I have a worksheet that asks me to graph a function on my calculator and then give values for every value of $\displaystyle \pi/12$ between 0 and $\displaystyle 2\pi$.

My question is, do you guys get r values that are extremely close to 6? My graphing calculator (TI-84 Silver Plus) gives me that for every $\displaystyle \theta$ value from 0 to $\displaystyle 2\pi$.

Here is the equation:

$\displaystyle r = 2 + 4\cos\theta$

My book gives an example of what the graph should look like for the model equation $\displaystyle r = a \pm b\cos\theta$ when 0 < a < b, and is described as a Limaçon with an inner loop.

In essence, amidoinitrite?