Consider the following two systems. а) (-4x + y x + 3y -3 b) { -4x + y 1 x + 3y -1 i) Find the inverse of the (common) coefficient matrix of the two systems. A-1 = ii) Find the solutions to the two systems by using the inverse, i.e. by evaluating A-'B where B represents the right hand side (i.e. 1 for system (b)). В — for system (a) and B = Solution to system (a): x = · y = Solution to system (b): x = , y = |||| ||||

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