Question: Question 3 (30 marks) 1 1 1 = 2 1 1 1 1 2 (a) Find the inverse of A by Gauss-Jordan elimination. (6 marks)

Question 3 (30 marks) 1 1 1 = 2 1 1 1 1 2 (a) Find the inverse of A by Gauss-Jordan elimination. (6 marks) (b) Find the inverse of A by cofactors. (6 marks) xl+x2+x3=1 *2X1+X2X3=2 x1+x22x3=4 (c) Solve the system of linear equations by Gaussian elimination. (6 marks) (d) Solve the system of linear equations by Cramer's rule. (6 marks) (e) Solve the system of linear equations by taking the inverse of A. (6 marks)

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