Question: 1. Consider the following linear system. + x2 + x3 = 1 1 + 2x2 + 4x3 = 2 21 +372 +9x3 = 3

1. Consider the following linear system. + x2 + x3 = 1

1. Consider the following linear system. + x2 + x3 = 1 1 + 2x2 + 4x3 = 2 21 +372 +9x3 = 3 (a) (5 points) Write it in matrix form Az = b. (b) (10 points) Find A-1 via Gaussian elimination. #1 (c) (5 points) Find the solution = 12 to the system.

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