Consider the equation below. f(x) = e7x + e−x (a) Find the intervals on which f is increasing. (Enter your answer using interval notation.)     Find the interval on which f is decreasing. (Enter your answer using interval notation.)     (b) Find the local minimum value of f.     (c) Find the interval on which f is concave up. (Enter your answer using interval notation.)

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.2: Functions Given By Tables
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Consider the equation below.

f(x) = e7x + e−x
(a) Find the intervals on which f is increasing. (Enter your answer using interval notation.)
 
 


Find the interval on which f is decreasing. (Enter your answer using interval notation.)
 
 


(b) Find the local minimum value of f.
 
 


(c) Find the interval on which f is concave up. (Enter your answer using interval notation.)
 
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