Step-by-step solution: Applying the First Derivative Test In Exercises 2156, (a) find
Chapter 4, Problem 42(choose chapter or problem)
Applying the First Derivative Test In Exercises 21-56, (a) find the critical numbers of f (if any), (b) find the open interval(s) on which the function is increasing or decreasing (c) apply the First Derivative Test to identify all relative extrema, and (d) use a graphing utility to confirm your results.
\(f(x)=\left\{\begin{array}{ll}2 x+1, & x \leq-1 \\x^{2}-2, & x>-1\end{array}\right.\)
Text Transcription:
f(x)={2 x+1, x leq-1
x^{2}-2, x>-1
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