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## Homework Statement

Hey guys.

http://img39.imageshack.us/img39/2345/27760913.jpg [Broken]

I need to show that these wave functions are orthonormal.

I'm a bit confuse, what's i and what's j?

I mean, do I need to take both of the functions, put them in the integral and to show that the result is the Kronecker delta?

Can I neglect the exponent for this?

Thanks a lot.

## Homework Equations

## The Attempt at a Solution

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