POLYNOMIAL FUNCTIONS Solving Polynomial Equations (Page 2 of 6)

A standard graph is a poor viewing window. We must narrow the view in the x-direction and greatly expand the view in the y-direction. Use the window settings shown, then re-graph the function.

WINDOW key....

GRAPH key.

 Calculator screen image. Calculator screen image.

Applying the Rational Zeros Theorem to this function, the list of possible rational zeros is
                                          +-{1/9, 2/9, 1/3, 4/9, 2/3, 8/9, 1, 4/3, 2, 8/3, 3, 4, 6, 8,12, 24}.
We will now use the graph to identify which of these values are likely to be zeros.
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