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Concept explainers
(a)
To find: all the real zeros of the given function.
(a)
![Check Mark](/static/check-mark.png)
Answer to Problem 42E
The real zeros are
Explanation of Solution
Given information:
Consider
Calculation:
Find the zero’s of the given function
The function
Hence, the real zeros are
(b)
To find: whether the multiplicity of the each zero of the given function is even or odd .
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 42E
Multiplicity of each zero is odd.
Explanation of Solution
Given information:
Consider
Calculation:
From part a,
The real zeros are
Each zero appears one time.
So Multiplicity of each zero is
Hence, Multiplicity of each zero is odd.
(c)
To find: the maximum possible number of turning points of the given function.
(c)
![Check Mark](/static/check-mark.png)
Answer to Problem 42E
The maximum number of turning points
Explanation of Solution
Given information:
Consider
Calculation:
The maximum number of turning points is one less than the degree of the function
Degree of the function is
Hence, the maximum number of turning points
(d)
To plot: the given function and to verify the results of previous parts.
(d)
![Check Mark](/static/check-mark.png)
Explanation of Solution
Given information:
Consider
Graph:
The graph of the
Hence, the results of previous parts are correct from the graph.
Chapter 2 Solutions
Precalculus with Limits
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