To check:whether the functions f and g are equal or not.
Answer to Problem 21WE
The functions f and g are not same.
Explanation of Solution
Given information:
Two functions
The domain and range of the functions f and g are same.
The domain of the functions
Calculation:
Obtain the ordered pair of the function f .
Substitute
Substitute
Substitute
Substitute
Substitute
Therefore, the ordered pairs of the function f are
Obtain the ordered pair of the function g.
Substitute
Substitute
Substitute
Substitute
Substitute
Therefore, the ordered pairs of the function g are
Here, the ordered pairs of f are not same as ordered pairs of g except
Thus, the functions f and g are not same.
Chapter 3 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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