Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.
-$$f ( x ) = 0.1 x ^ { 3 } - 15 x ^ { 2 } - 39 x - 85$$
A) Approximate local maximum at -1.284; approximate local minimum at 101.284
B) Approximate local minimum at -101.284; approximate local maximum at 1.284
C) Approximate local maximum at -101.284; approximate local minimum at 1.284
D) Approximate local minimum at -1.284; approximate local maximum at 101.284

Question

Quizplus · Accepted Answer

Using a graphing calculator to find the local extrema of the given cubic function, we would find an approximate local maximum at x = -1.284 and an approximate local minimum at x = 101.284.

Use the Maximum/minimum Finder on a Graphing Calculator to Determine f(x)=0.1x3−15x2−39x−85f ( x ) = 0.1 x ^ { 3 } - 15 x ^ { 2 } - 39 x - 85f(x)=0.1x3−15x2−39x−85

Use the Maximum/minimum Finder on a Graphing Calculator to Determine $f ( x ) = 0.1 x ^ { 3 } - 15 x ^ { 2 } - 39 x - 85$