- #1

John O' Meara

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## Homework Statement

A simple question; find the absolute extrema of f(x)=sin(cos(x)) on the interval [0,2pi].

## Homework Equations

The chain rule

## The Attempt at a Solution

Assuming that I am correct about the derivative being -cos(cos(x))sin(x), how do you solve

-cos(cos(x))sin(x)=0