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Leb

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**[SOLVED] Superposition of two wavefunctions**

## Homework Statement

The problem is more of complex number arithmetic more then conceptual :

## Homework Equations

[itex]|\psi|^{2}=\psi\psi^{*}[/itex]

## The Attempt at a Solution

I simply used the equation given above, but instead of getting 2Re{...} I get :

[itex]|\psi_{1}||\psi_{2}| \left( c_{1}c_{2}^{*}\exp({i(\alpha_{1}-\alpha_{2})})+c_{1}^{*}c_{2}\exp({-i(\alpha_{1}-\alpha_{2})})\right)[/itex]

Could someone explain how is this equal to that given in the notes I attached ?

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