Concept explainers
(a)
To explain: Why the given graph f is one-to-one.
(a)
Explanation of Solution
Perform the horizontal line test for the given graph.
Draw a horizontal line such that it passes through the curve as shown in Figure 1.
From Figure 1, it is observed that the horizontal line intersects the curve exactly at once which means it passes the horizontal line test. Therefore, the function is an one-to-one function.
(b)
To find: The domain and range of
(b)
Answer to Problem 18E
The domain of
The range of
Explanation of Solution
Notice that the domain of the graph f is [−3, 3] and the range of the graph f is [−1, 3].
According to the definition of an inverse function, the domain of
Thus, the domain of
(c)
To find: The value of
(c)
Answer to Problem 18E
The value of
Explanation of Solution
From part (a) it is known that the function is one-to-one.
It is identified from the graph that
According to the definition of an inverse function,
The value of
Thus, it can be concluded that the value of
(d)
To estimate: The value of
(d)
Answer to Problem 18E
The value of
Explanation of Solution
From part (a) it is known that the function is one-to-one.
It is identified from the graph that
According to the definition of an inverse function,
The value of
Thus, it can be estimated that the value of
Chapter 1 Solutions
Single Variable Calculus: Concepts and Contexts, Enhanced Edition
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