Answer
$\left(-0.20,-28.62\right)$
Work Step by Step
Step 1. Graph the function $f(x)=x^4-7x^3+13x^2+6x-28$ as shown in the figure.
Step 2. Use the graph to approximate the turning point in the window as $\left(-0.20,-28.62\right)$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 3 - Polynomial and Rational Functions - 3.4 Polynomial Functions: Graphs, Applications, and Models - 3.4 Exercises - Page 354: 88
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