Consider a system whose Hamiltonian H and an operator A are given by the matrices

[0. -i. 0] [0. -i. 0]
H= ε₀ [i. 0. 2i], A= a₀ [i. 1. 1]
[0. -2i. 0] [0. 1. 0]

a. If we measure energy, what values will we obtain?