Use the maximum-minimum feature of your graphing calculator to determine the location of the peaks and valleys of f (x )equals
0.2 x cubed plus 0.3 x squared minus 1.2 x plus 0.4. a. Find the x-coordinates, if any, at which f has a peak (a maximum). What are these maximum values? b. Find the x-coordinates, if any, at which f has a valley (a minimum). What are these minimum values?
1 answer:
Answer:
a) maximum of 2.4 at x=-2
b) minimum of -0.3 at x=1
Step-by-step explanation:
A cubic function that is not monotonic will have one maximum and one minimum. If the leading coefficient is positive (as here), the maximum will have an x-coordinate that is less than that of the minimum.
The graph shows the extrema you're looking for.
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