A function is defined by p(x)= ( (x) )

MATHEMATICS · Multi-part · AP · Calculus AB · Differentiation: Composite, Implicit, and Inverse Functions · Differentiation: Composite, Implicit, and Inverse Functions

Problem

A function is defined by p(x)=arcsin⁡(arcsin⁡(x)),p(x)=\arcsin\bigl(\arcsin(x)\bigr), where pp is considered only on its maximal domain. (a) Determine the exact domain of pp and explain how you obtain it. (b) Calculate p′(x)p'(x) for all xx in the domain found in part (a). Express your result in simplest form. (c) Evaluate p′ ⁣(12)p'\!\bigl(\tfrac12\bigr) exactly. (d) Interpret the sign of p′(x)p'(x) on the interior of its domain. What does this indicate about the monotonic behavior of pp? Provide reasoning in complete sentences.

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