Question: Question 1: Feb 2022 4 a) If A = 2 3 4 5 6 and B = 0 1 , verify that 3(A -B) =(3A

Question 1: Feb 2022 4 a) If A = 2 3

Question 1: Feb 2022 4 a) If A = 2 3 4 5 6 and B = 0 1 , verify that 3(A -B) =(3A -3B7 ) . 2 7 b) Given the system of linear equations -X, +X, +2X, =1, 2x, +3x, + X, =-2, 5x, + 4x, + 2X, = 4. X , (i) Write the system of linear equation in the form AX =B, where X = X, (ii) Use Gauss-Jordan elimination to find A . Hence, find X . Question 2: Jul 2021 4 4 a) If A = -3 -3 a and AZ =/, then find the values of a, b, c and d b C d b) Solve the system of linear equations using Gaussian elimination method. x - y+z=8, 2x + 3y - z=-2, 3x - 2y - 9z = 9

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