
Concept explainers
A parabolic reflector (paraboloid of revolution) is used by TV crews at football games to pick up the referee's announcements, quarterback signals, and so on. A microphone is placed at the focus of the parabola. If a certain reflector is

Where should the microphone be placed, if a parabolic reflector (paraboloid of revolution) is used by the TV crews at the football game to pick up the referee’s announcements, quarterback signals, and so on. A microphone is placed at the focus of the parabola, if a certain reflector is
Answer to Problem 13CT
Solution:
The microphone should be placed
Explanation of Solution
Given information:
A parabolic reflector (paraboloid of revolution) is used by the TV crews at the football game to pick up the referee’s announcements, quarterback signals, and so on. A microphone is placed at the focus of the parabola, if a certain reflector is
Explanation:
Draw the parabola used to form the reflector which is
Thus, the general form of the equation of the parabola is
Since the point
The microphone should be placed
Following graph shows the location of the microphone
Chapter 10 Solutions
Precalculus
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