Question

is stationary state has constant probability density and constant expectation value​

Answer 1

Explanation:

where α is any constant, represents the same state. ... variance) of the probability distribution for energy in the stationary state ψ

Answer 2

Answer:

However, it also has on the bottom of the page: "In general, the expectation value for any observable quantity is found by putting the quantum mechanical operator for that observable in the integral of the wavefunction over space".

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