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1. Find the first three energy levels En (n = 1,2,3) that an electron can have...

1. Find the first three energy levels En (n = 1,2,3) that an electron can have in a quantum well structure with a well thickness of 120 Angstroms and an infinite potential barrier. 

2. Also find the wave function, ?(x) (solve Schrodinger's equation) 

3. Draw the wave function when n = 1 ~ 3.

(?=√2mE/ℏ)

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