Concept explainers
To Find: The suitable functions from twelve basic functions based on the given description.
The three functions with infinitely many local extrema are:
y=lnxy=sinxy=cosx
Given information:
The three functions with infinitely many local extrema.
Given functions are:
1.f(x)=x 2.f(x)=x2 3.f(x)=x3 4.f(x)=1x5.f(x)=√x 6.f(x)=ex7.f(x)= ln x 8.f(x)=sin x9.f(x)=cos x 10.f(x)=|x|11.f(x)=int x 12.f(x)=11+e−x
Calculation:
An open interval containing c is said to have a
If a value f(c) of a function f is less than or equal to all range values of f on some interval including c , then it is called the local minimum of the function.
From the given functions, the three functions with infinitely many local extrema. are:
y=lnx
y=sinx
y=cosx
Thus, the three functions with infinitely many local extrema are:
y=lnxy=sinxy=cosx
Chapter 1 Solutions
PRECALCULUS:GRAPH...-NASTA ED.(FLORIDA)
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