
Concept explainers
(a)
To find : the maximum and minimum point of the function
(a)

Answer to Problem 81E
The maximum points of the function are
The minimum point of the function are
Explanation of Solution
Given information : Function
Concept Involved:
A maximum is a high point and a minimum is a low point over the given interval.
Graph:
Interpretation:
The graph of the function
(b)
To find : all the solutions of the trigonometric equations in the given interval
(b)

Answer to Problem 81E
The solution to the given trigonometric equation are
Explanation of Solution
Given information : Function
Concept Involved:
Solution to a
To solve a trigonometric equation, use standard algebraic techniques (when possible) such as collecting like terms, extracting square roots, and factoring.
Our preliminary goal in solving a trigonometric equation is to isolate the trigonometric function on one side of the equation.
Calculation:
Divide throughout the equation by
Simplify fraction throughout the equation
Solving the equation and finding x values that makes it true in the interval
- By subtracting 1 on both sides of the equation
- By simplify on both sides of the equation
- By dividing -1 on both sides of the equation
- By simplifying fraction on both sides of the equation
Conclusion:
Chapter 5 Solutions
Precalculus with Limits
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