When two pure notes that are close in frequency are played together, their sounds interfere to produce beats; that is, the loudness (or amplitude) of the sound altemately increases and decreases. I the two notes are given by h)- cos174) and ) ces(19t) the resulting sound is o-e) + f(). (a) Graph the function y ). 23

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.2: Applications Of Exponential Functions
Problem 47E
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(b) Verify that f(t) = 2 cos(t) cos(18t).
%3D
(c) Graph y = 2 cos(t) and y = -2 cos(t), together with the graph in part (a), in the same viewing rectangle.
2.5
2.0
f(t)
2
Transcribed Image Text:(b) Verify that f(t) = 2 cos(t) cos(18t). %3D (c) Graph y = 2 cos(t) and y = -2 cos(t), together with the graph in part (a), in the same viewing rectangle. 2.5 2.0 f(t) 2
When two pure notes that are close in frequency are played together, their sounds interfere to produce beats; that is, the loudness (or amplitude) of the sound altemately increases and decreases. I
the two notes are given by
(e) - cos(17) and )- ces(19t)
the resulting sound is o - e) + e).
(a) Graph the function y ).
its
23
Transcribed Image Text:When two pure notes that are close in frequency are played together, their sounds interfere to produce beats; that is, the loudness (or amplitude) of the sound altemately increases and decreases. I the two notes are given by (e) - cos(17) and )- ces(19t) the resulting sound is o - e) + e). (a) Graph the function y ). its 23
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