# Polar Representation of Sinusoidal Functions

1. Jan 23, 2008

### StrongForce

1. The problem statement, all variables and given/known data

What would the geometric explaination of exp(-i*x) be?

2. Relevant equations

Exp(-i*x), i being (-1)^1/2

3. The attempt at a solution

I'm pretty sure this is just a circle, created clockwise? Just want to check.

2. Jan 23, 2008

### Rainbow Child

The magnitude of $$e^{-i\,x}$$ is 1, so it represents a unit circle with center $$(0,0)$$.

If x varies on $$[0,2\,pi)$$ the circle is created clockwise.