- #1

- 746

- 8

## Homework Statement

Write ##sin(ax)## for ##a \in \mathbb{R}##. (Use generating function for appropriate ##z##)

## Homework Equations

##e^{2xz-z^2}=\sum _{n=0}^{\infty }\frac{H_n(x)}{n!}z^n##

## The Attempt at a Solution

No idea what to do.

My idea was that since ##sin(ax)=\frac{1}{2i}(e^{iax}-e^{-iax})## I tried to calculate ##z## from ##e^{iax}=e^{2xz-z^2}## but I doubt this method really works.

Could somebody give me a hint?