9. For a spin-1/2 system, define Sx and S, in terms of projection operators onto | ± x) and | ± y) , respectively. Then compute the commutator [Sx, S,] and express your results as ih × {an expression entirely in the ± z) basis}.
9. For a spin-1/2 system, define Sx and S, in terms of projection operators onto | ± x) and | ± y) , respectively. Then compute the commutator [Sx, S,] and express your results as ih × {an expression entirely in the ± z) basis}.
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