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I only need help with part C, please. I included the rest for context. Thanks! *Problem 3.13 (a) Prove the following commutator identity: [AB, C]

I only need help with part C, please. I included the rest for context. Thanks!

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*Problem 3.13 (a) Prove the following commutator identity: [AB, C] = A[B, C] + [A, C]B. (b) Show that [x", p] = ihnx-1 (c) Show more generally that df If (x), p] = in dx for any function f (x)

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