Chapter 3.3, Problem 74E

(a)

To determine

To Graph: The provided function f and using the table for $f\text{'}\left(x\right)$.

$x$	0	$\frac{\pi }{6}$	$\frac{\pi }{4}$	$\frac{\pi }{3}$	$\frac{\pi }{2}$	$\frac{2\pi }{3}$	$\frac{3\pi }{4}$	$\frac{5\pi }{6}$	$\pi$
$f\text{'}\left(x\right)$	3.14	$-0.23$	$-2.45$	$-3.11$	0.69	3.00	1.37	$-1.14$	$-2.84$

(b)

To determine

To calculate: The approximate value of the critical numbers.

(c)

To determine

To calculate: The approximate value of the relative extremas..