# Normalizing Ψ

1. Sep 18, 2011

### jinksys

1. The problem statement, all variables and given/known data
I am doing part (A).

2. Relevant equations

3. The attempt at a solution

When solving the problem, A^2 is pulled out of the integral and becomes |A|^2. Why does A become |A|?

2. Sep 18, 2011

### vela

Staff Emeritus
The normalization constant can, in general, be complex, so when you square the modulus of the wave function, you'd get |A|2 instead of simply A2. The problem here, however, states that A is real, so you could just use A2.