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What is the frequency of the function f(x)?

f(x)=2cos(x)−4

 

give your answer, in simplest fraction form, 

 Feb 20, 2019
 #1
avatar+98126 
+3

f(x) =  2cos (x) - 4

 

We have the form

 

f(x) =   Acos [ Bx ] + C

 

Note that

 

B = 1    =   2pi / period

 

This implies that the period must be 2pi

 

The frequency  =    1 /period =    1 / [ 2 pi ]

 

 

cool cool  cool

 Feb 20, 2019

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