Concept explainers
(a)
The domain of
(a)
Answer to Problem 13CT
Solution:
The domain of the function
Explanation of Solution
Given information:
The function is
Explanation:
Consider the function
The given function is a logarithmicfunction.
The logarithmic function is defined only for positive real numbers.
The domain of
The domain of
Thus, the domain of the function
(b)
To graph: The function
(b)
Explanation of Solution
Given information:
The function is
Graph:
Use the steps below to graph the function using graphing calculator:
Step I: Press the ON key.
Step II: Now, press [Y=]. Input the right hand side of the function
Step III: Then hit [Graph] key to view the graph.
The graph of the function
Interpretation:
By looking at the graph, it is observed that as
(c)
The range of any asymptotes from the graph of
(c)
Answer to Problem 13CT
Solution:
1) The range of the function
2) The vertical asymptote of
Explanation of Solution
Given information:
The function is
Explanation:
The domain of the function
Range of the function is the set of values of the dependent variable for which a function is defined.
From the graph, range of
The graph of
The vertical asymptote is
Therefore, thevertical asymptote of
(d)
The inverse of
(d)
Answer to Problem 13CT
Solution:
The inverse of
Explanation of Solution
Given information:
The function is
Explanation:
Consider the function
Step 1: Replace
Step 2: Interchange the variables
Interchange the variables
Step 3: Solve for
Subtract
Multiplying both sides by
By using,
Adding
Replace
Therefore, the inverse of
(e)
The domain and range of
(e)
Answer to Problem 13CT
Solution:
The domain of
Explanation of Solution
Given information:
The function is
Explanation:
From part (d),
The exponential function is defined for all real numbers.
The domain of
The domain of the function
By using, domain of
The range of
Therefore, the domain of
(e)
To graph: The function
(e)
Explanation of Solution
Given information:
The function is
Graph:
From part (d),
Use the steps below to graph the function using graphing calculator:
Step I: Press the ON key.
Step II: Now, press [Y=]. Input the right hand side of the function
Step III: Then hit [Graph] key to view the graph.
The graph of the function
Interpretation:
By looking at the graph, it is observed that as
Chapter 5 Solutions
Precalculus
Additional Math Textbook Solutions
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
Thomas' Calculus: Early Transcendentals (14th Edition)
Calculus and Its Applications (11th Edition)
Calculus & Its Applications (14th Edition)
Glencoe Math Accelerated, Student Edition
University Calculus: Early Transcendentals (3rd Edition)
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