(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 quadratic equation is all real numbers
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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