What is the frequency of #f(theta)= sin t - cos 3 t #?

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What is the frequency of #f(theta)= sin t - cos 3 t #?

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Answer 1 · 2016-09-16T14:54:14

#1/(2pi)#

Explanation:

Period of sin t --> #2pi#
Period of cos (3t) --> #(2pi)/3#
Period of f(t) --> #2pi#
#2pi# is the least common multiple of #2pi# and #(2pi)/3#
Frequency=1/period=#1/(2pi)#

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What is the frequency of #f(theta)= sin t - cos 3 t #?

1 Answer

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