1. Let f(x) = x² + 1. %3D (a) Compute f(0), f(-1), f(1/2), and f(/2). (b) For what values of x is it true that (i) f(x) =f(-x)? (ii) f(x+1) = f(x) +f(1)? (iii) f(2x) = 2f(x)?

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