<x>= ∫ complex ψ x ψ dx(adsbygoogle = window.adsbygoogle || []).push({});

How do we get this formula? And why must the complex ψ must be placed in front?

Please guide or any link to help,not really understand this makes me difficult to start in quantum mechanics.

Your help is really appreciated. Pls

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# How do we get the expectation value formula?

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