Answer
Increasing on $(-\infty,0)\cup (2.667,\infty)$ and decreasing on $(0,2.667)$
Work Step by Step
See the graph of $f(x)=x^3-4x^2$.
We can see that $f$ is increasing on $(-\infty,0)$ and $(2.667,\infty)$ and it is decreasing on $(0,2.667)$.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 2, Functions - Chapter 2 Review - Exercises - Page 268: 49
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