Chapter 4.1, Problem 59E

(a)

To determine

To find: The critical points of the function $f\left(x\right)=\sec x$ on $\left[\frac{-\pi }{4},\frac{\pi }{4}\right]$.

(b)

To determine

The absolute extreme values of $f\left(x\right)=\sec x$ on the given interval $\left[\frac{-\pi }{4},\frac{\pi }{4}\right]$.

(c)

To determine

To draw: The graph of the function $f\left(x\right)=\sec x$, to confirm the results obtained.