Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 6 - Inverse Circular Functions and Trigonometric Equations - Section 6.3 Trigonometric Equations II - 6.3 Exercises - Page 280: 58b

Answer

We can see a sketch of the graph of this function over the interval $[0.15, 1.15]$ We can see that there are 4 beats in one second.
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Work Step by Step

Consider the frequencies $220~Hz$ and $216~Hz$ $P_1 = 0.005~sin~440~\pi~t$ $P_2 = 0.005~sin~432~\pi~t$ $P= P_1+P_2 = 0.005~sin~440~\pi~t+ 0.005~sin~432~\pi~t$ We can see a sketch of the graph of this function over the interval $[0.15, 1.15]$ We can see that there are 4 beats in one second.
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