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Define the matrices a 12 16 423 1 219 10 1 and b 2 7 143


Define the matrices: A = [12 16 4;23 1 21;9 10 1] and B = [2 7 14;3 11 2;-9 10 12].

  1. Perform matrix multiplication AB.

  2. Perform matrix multiplication BA.

  3. Are the answers from Parts (a) and (b) the same? If yes, explain why. If not, explain why.

  4. Find the inverse of A, and call it matrix X.

  5. Find the inverse of B, and call it matrix Y.

  6. Perform matrix multiplication A*X.

  7. Perform matrix multiplication B*Y.

  8. Are the answers from Parts (g) and (h) the same. If yes, explain why. If not, explain why.

  9. Submit a printout of your results (from the Command Window) for Parts (a) through (h).

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Basic Computer Science: Define the matrices a 12 16 423 1 219 10 1 and b 2 7 143
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