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Given f(x)=x^4-7x^3+6x^2+8x+9
a) Determine the x- and y-coordinates of the lowest point on the graph.
b) Size the x-window from [-10,10]. Find the highest and lowest values of f(x) over the interval       -10≤x≤10
c) Find the highest and lowest values of f(x) if -2≤x≤6



Answer :

The workings to the answers are in the attachments below. Open them up in a new window to see them in full.

Lowest Point On The Graph:

(4.480878208, -61.32441280)

Highest Point On The Graph:

(1.155422854, 17.23818241)

2nd Lowest Point On The Graph:

(-0.3863010618, 7.23076164)
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