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.
-$$f ( x ) = - x ^ { 3 } - 8 x ^ { 2 } + 21 x + 108 ; [ 1,2 ]$$
A) $( - 3.50 , - 106.37 )$
B) $( 0 , - 12 )$
C) $( 1.09,120.09 )$
D) $( - 6.42 , - 621.94 )$

Question

Quizplus · Accepted Answer

To find the turning points of the given polynomial function within the interval [1,2], one would typically use a graphing calculator to plot the function and identify the points where the slope changes direction. The correct answer, (1.09, 120.09), falls within the specified interval and represents a point where the function's graph turns, indicating a local maximum or minimum.

Use a Graphing Calculator to Find the Coordinates of the Turning