PROBLEM 2. Find the eigenvalues of a Hermitian operator represented by the following matrix: 1 Â = i 0 -i 1

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For a particle moving in one dimension, show that the operator ?̂?̂ is NOT Hermitian. Construct an operator which corresponds to this physical observable product and is Hermitian. ? and ? are position and momentumof the particle.

Consider the matrix representation of Lx, Ly and L₂ for the case l = 1 (see Matrix Representation of Operators class notes pp. 11-12). (a) Construct the matrix representation of L² for l = 1. (b) What are the eigenvalues and corresponding eigenvectors of L²? (c) Are the eigenvectors of L² the same as those of L₂? Explain. (d) Compute L² |x; +1), where |x;+1) is the eigenvector of La corresponding to eigenvalue +ħ.

Consider the following operator imp Â= and the following functions that are both eigenfunctions of this operator. mm (0) = e² ‚ (ø) = (a) Show that a linear combination of these functions d² dø² is also an eigenfunction of the operator. (b) What is the eigenvalue? -m imp c₁e¹m + c₂e² -imp -imp = e