- #1

- 1,868

- 0

## Homework Statement

Hi all.

I have a wave function given by

[tex] \Psi \left( {x,0} \right) = A\frac{x}{a}[/tex]

I have to normalize it, which is OK. But in the solution to this problem, the teacher uses |A|

^{2}when squaring A. Is there any particular reason for this? I mean, if you square the constant, then why bother with the signs?

I thought that it maybe because A is a complex constant, but still - I cannot see what difference it would make taking the absolute value of A before squaring.