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.
-$$f ( x ) = - 2 x ^ { 3 } - 10 x ^ { 2 } + 82 x + 90 ; [ 2,3 ]$$
A) $( 2.39,201.56 )$
B) $( - 5.72 , - 893.92 )$
C) $( 0,45 )$
D) $( - 5.50 , - 829.87 )$

Question

Quizplus · Accepted Answer

The turning point within the domain [2,3] for the polynomial function $f(x) = -2x^3 - 10x^2 + 82x + 90$ can be found using a graphing calculator. The coordinates of the turning point that fall within this interval are approximately $(2.39, 201.56)$.

Use a Graphing Calculator to Find the Coordinates of the Turning