I have to calculate the Expectation Value of an Energy Eigenstate : < En >(adsbygoogle = window.adsbygoogle || []).push({});

The integral is ∫ ψ* En ψ dx

I have :

A ) ψ = √L/2 sin nπx/L , a single standing wave of the wave function

B ) ψ = BsinBcosD , the wave function of the particle

C ) ψ = ΣCn ψn = C , sum of all the standing waves

Which ψ do I use ? Why ? What's wrong with using the other two ?

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# I Which ψ do I use for the Expectation Value ?

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