- #1
kottur
- 56
- 0
Homework Statement
Put [itex]cos^{4}(x)[/itex] into a Fourier series.
Homework Equations
[itex]cos^{4}(x)=(\frac{e^{ix}+e^{-ix}}{2})^{4}[/itex]
[itex]a_0+\sum^{\infty}_{n=1}(a_{n}cos(nx)+b_{n}sin(nx))[/itex]
The Attempt at a Solution
I don't get what I'm supposed to use as [itex]a_{0}[/itex], [itex]a_{n}[/itex] and [itex]b_{n}[/itex] so I'm stuck...