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Find: (a) A left inverse to the function f: Z Z Z given by f(a) = (a 1, 2a + 3), and show that

Find: (a) A left inverse to the function f: Z Z Z given by f(a) = (a 1, 2a + 3), and show that it is not a right inverse. (b) A right inverse to the function g: ZxZ Z given by g(a, b) = 2a - 3b, and show that it is not a left. inverse.

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