(a)
To graph: the given quadratic function
(a)
Answer to Problem 20RE
Explanation of Solution
Given:
Calculation:
Graph the function
at
Now,
No real x-intercept is found. So, the function
The vertex is at
Since
The graph of
Conclusion:
Thus, the given equation is drawn.
(b)
the domain and the range of the function.
(b)
Answer to Problem 20RE
The domain is
The range is
Explanation of Solution
Calculation:
Determine the range and domain of the function
The domain of
For the range, find the minimum and maximum value of function. The graph of the function
Conclusion:
The domain is
The range is
(c)
the increasing and decreasing interval.
(c)
Answer to Problem 20RE
Decreasing interval
Explanation of Solution
Calculation:
Determine whether the function
Conclusion:
Hence, decreasing interval
Chapter 3 Solutions
Precalculus
Additional Math Textbook Solutions
University Calculus: Early Transcendentals (3rd Edition)
Calculus, Single Variable: Early Transcendentals (3rd Edition)
University Calculus: Early Transcendentals (4th Edition)
Precalculus
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
Precalculus (10th Edition)
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