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MAT 131 Sample Quiz 5 Answers

Perform the matrix multiplication indicated below:

The easiest way to perform the matrix multiplication is to use your TI-83 calculator. It can also be done by hand:

 3 * -2 + 2 * 3 = -6 +  6 =  0
1 * -2 + 4 * 3 = -2 + 12 = 10