Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 2 - Section 2.3 - Polynomial Functions and Their Graphs - Exercise Set - Page 352: 98

Answer

The graphs of the given polynomial functions $ f\left( x \right)={{x}^{3}}-6x+1$ and $ g\left( x \right)={{x}^{3}}$ are given below.

Work Step by Step

We have to according to the Leading Coefficient Test, the end behavior of the graph of a polynomial function, $ g\left( x \right)={{a}_{n}}{{x}^{n}}+{{a}_{n-1}}{{x}^{n-1}}+\cdots +{{a}_{2}}{{x}^{2}}+{{a}_{1}}x+{{a}_{0}}$ depends on the leading coefficient $\left( {{a}_{n}} \right)$ and the degree of the polynomial. We use the rules given on page 337 to graph the polynomial. Here, both functions have degree 3 (odd) and both of their leading coefficients is positive, so the graphs fall to the left and rise to the right.
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