# Check this derivative

1. Jun 9, 2016

### Muthumanimaran

1. The problem statement, all variables and given/known data
Currently I am doing a problem of finding Wigner function for Fock States, while I got this derivative, I found the derivative, but I am not sure my answer is correct. please verify whether my answer is correct or not.

$$\frac{∂^2n}{∂β^n∂(β*)^n} exp(-|β|^2-4|α||β|)$$

β and α are complex.
2. Relevant equations

3. The attempt at a solution
My solution is (-2|β|-4|α|)^(2n) exp(-|β|^2-4|α||β|)

2. Jun 14, 2016