x+ 12 The function f(x) = is one-to-one. For the function, X- 4 1 a. Find an equation for f ' (x), the inverse function. - 1 = x and f '(f(x)) = x. - 1 b. Verify that your equation is correct by showing that f(f '(x)): a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Simplify your answer. Use integers or fractions for any numbers in the expression.) - 1 O A. f"(x) =, for x2 O B. f"(x) =| for all x OC. f '(x)= , for x+ O D. f'(x) =| for xs

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