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3a) Use Gaussian elimination method, solve the linear equation: 4x - y +z = 17 4x -8y + 2z = 6 - 2x + y

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3a) Use Gaussian elimination method, solve the linear equation: 4x - y +z = 17 4x -8y + 2z = 6 - 2x + y + 5z = 9 After the first step which of the following is correct? (A) -1 1 17 --91-11 1 11 35 (C) (B) 0-71-11 1135 -1 0-9 10-11 0-3 11-35 (D) O -7 1 0 -3 9 Answer: 3b) Write a short explanation for your answer in 3) (above) (14 points)

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