I was computing an expectation value of kinetic energy.
Here the kinetic energy is the square of momentum divided by 2m.
But when I square expectation value of momentum, the textbook return Psi unsquared
Please see attachment.
How was the equation highlighted in the attachment below simplified. I get the other term but another highlighted term went to zero, how?
The hand writing is where I tried using integration by parts.
A’ = ih/2m