# When calculating the probability using P(x)=$$\varphi$$(x)dx, do I need to:

1. Nov 4, 2009

### grooveactiva

. . . normalize the wave function first? So I will really be finding the probability of
$$\varphi$$/(normalization constant)?

2. Nov 4, 2009

### Feldoh

Re: when calculating the probability using P(x)=$$\varphi$$(x)dx, do I need to

Well when we normalize a wave function we are correcting it by a constant such that it physically makes sense.

I mean it's physically nonsense to talk about a wave function that isn't normalized.

But at the same time the normalization is contained in the wave function itself so you wont have $$\frac{\psi}{const}$$ you just have $$\psi$$ which when we integrate the square of the wave function over all space equals 1.