(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Now in a revision lecture given a few weeks ago, the lecturer gave this as the answer.

3. The attempt at a solution

No I think generally I'm fine with it (apart from it doesn't seem very obvious that this is what you should do with the maths!).

BUT

1) Where do the subscript m's come from? Why aren't they still n's like are used for the conjugate of [tex]\psi[/tex]?

2) How come the delta function suddendly gets rid of the sigma m, and itself, whilst simultaneously changing the am to an?

And whats a good definition of orthogonality? A simple laymans definition!!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Eigenfunctions problem - i have the answer, explanation required!

**Physics Forums | Science Articles, Homework Help, Discussion**