Question: Question 2 A. Given the matrix R = (2-1), 13 i. show that R is non-singular. mark) ii. find R-, the inverse of R. (2

Question 2 A. Given the matrix R = (2-1), 13 i.

Question 2 A. Given the matrix R = (2-1), 13 i. show that R is non-singular. mark) ii. find R-, the inverse of R. (2 marks) iii. show that RR- = I. (2 marks) B. Use the matrix method or otherwise to solve the following system of simultaneous equations: i. x + 2y + 3z = -5 ii. 3x + y - 3z = 4 iii. 3x + 4y + 7z = -7 (15 marks) (Total 20 marks)

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