(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Show that the mean value of a time-independent operator over an

energy eigenstate is constant in time.

2. Relevant equations

Ehrenfest theorem

3. The attempt at a solution

I get most of it, I'm just wondering how to say/show that this operator will commute with the Hamiltonian operator.

Is it correct to say that because they both act on energy eigenstates, they must commute?

If so, is there a way to show this?

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# Homework Help: Does this operator commute with the Hamiltonian operator?

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