Question: 2. (5 points) Let f be some function such that f~1(z) = cos(z)3. (a) Find f~(z). (b) Use implicit differentiation to find f'(x). (Hint: Let

2. (5 points) Let f be some function such that f~1(z) = cos(z)3. (a) Find f~(z). (b) Use implicit differentiation to find f'(x). (Hint: Let y = f(x), then f~!(z) = cos(z) means z = cos(y)?)
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