# Region D in Polar Coord

1. Mar 4, 2007

### Swapnil

How would you write the region D given by

$$$D: \left\{ \begin{array}{l l} \frac{-d}{2} \leq y \leq \frac{d}{2} \\ -\infty < x < \infty \\ \end{array} \right.$$$

in polar coordinates?

Last edited: Mar 4, 2007
2. Mar 4, 2007

### mjsd

first think about how you write the equation of a straight line in polar coord...

3. Mar 4, 2007

### HallsofIvy

Staff Emeritus
Or, more specifically, how to write x and y in polar coordinates. Replace x and y in the inequalities with those and solve the inequalities.