Concept explainers
(a) Graph the quadratic function
concave up or concave down and by finding its vertex, axis of symmetry,
and
(b) Solve
(a)
To graph: The quadratic function
Explanation of Solution
Given information:
The quadratic function
Explanation:
Comparing equation
The graph of quadratic equation
In an equation
Vertex of
In equation
To find
Therefore, vertex of
For an equation
Therefore, axis of symmetry for
To find
Therefore,
Since
Plot the points
Therefore, graph of this function
Interpretation:
The graph represents the quadratic function
(b)
The solution of
Answer to Problem 6CR
Solution:
Thesolution for
Explanation of Solution
Given information:
The function
Explanation:
Solving the inequality
From graph of
Therefore, the solution of the inequality
In interval notation, solution of
Chapter 5 Solutions
Precalculus
Additional Math Textbook Solutions
University Calculus: Early Transcendentals (4th Edition)
Precalculus Enhanced with Graphing Utilities (7th Edition)
Calculus: Early Transcendentals (2nd Edition)
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
Calculus & Its Applications (14th Edition)
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