Show that for ψ1 , ψ2 ∈ C,(adsbygoogle = window.adsbygoogle || []).push({});

|ψ1 + ψ2 |^2

can take any value in [0, 4α], where

α = |ψ1 |^2 = |ψ2 |^ 2

I think the solution has something to do with triangular identies but I am not sure how to start this problem at all.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Complex wave function

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