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## Homework Statement

Please see attached problem

## Homework Equations

## The Attempt at a Solution

ok so I am trying to solve these three question.. when i understand the method i think i can solve them all.. so please could you help me solve the first 5.3

I understand that L

_{z}= -i d/dphi

but I am not sure how to apply this to the wavefunction to find eigenvalues..

any help would be great!

thanks