Question: Let A=(aij) be a 3x3 matrix. We know that -3 15 -2 == 2 2 = 1 3 = 0 1 2 1 are

Let A=(aij) be a 3x3 matrix. We know that -3 15 -2

Let A=(aij) be a 3x3 matrix. We know that -3 15 -2 == 2 2 = 1 3 = 0 1 2 1 are 3 vectors such that Av 1=2v 1, Av 2=6v 2, Av 3=9v 3. Find A and determine the value of a21 + a22 + a23

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