Use a graphing calculator to find the coordinates of the turning points of the graph of the polynomial function in the indicated domain interval. Give answers to the nearest hundredth.
-$$f ( x ) = x ^ { 3 } - 4 x - 1 ; [ 1,2 ]$$
A) $( 1.15 , - 4.08 )$
B) $( 4,47 )$
C) $( - 1.15,2.08 )$
D) $( 0 , - 1 )$

Question

Quizplus · Accepted Answer

The turning point of the given polynomial $f(x) = x^3 - 4x - 1$ in the interval $[1,2]$ can be found by using a graphing calculator to identify local maxima or minima within this domain. The coordinates $(1.15, -4.08)$ are the closest to a turning point in the specified interval when rounded to the nearest hundredth.

Use a Graphing Calculator to Find the Coordinates of the Turning