Find the intervals on which​ f(x) is​ increasing, the intervals on which​ f(x) is​ decreasing, and the local extrema. f(x)=x 4+4x 3+33 (Type your answer in interval notation. Type integers or simplified fractions. Use a comma to separate answers as​ needed.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 52E
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Find the intervals on which​ f(x) is​ increasing, the intervals on which​ f(x) is​ decreasing, and the local extrema.
f(x)=x 4+4x 3+33
(Type your answer in interval notation. Type integers or simplified fractions. Use a comma to separate answers as​ needed.)
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