Question: For my lin alg course, I got answer wrong, but I'm not sure why. Please help! 2. Let A = and define the linear operator

For my lin alg course, I got answer wrong, but I'm not sure why. Please help!

2. Let A = and define the linear operator T : M2x2(R) - M2x2(R) by T(X) = AX - XA. (b) Find - basis for ker(T) using one of the fun capacity state which Lamont vu used. ( c ). which lun to you wed. (d) Let B E M2x2(R). Prove that AB = BA if and only if B E ker (T)

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