What is the frequency of the function f(x)? f(x)=3cos(5x)+2

enter your answer, in simplest fraction form, in the box

Step-by-step explanation:

The easiest way to do this is to get the period correct first.

If the function f(x) = cos(B * x) then the period is

P =  2*pi/B  In this case B = 5

P = 2* pi/5

The frequency is the reciprocal of the period

f = 1/p

f = 1/(2pi/5) Now all you do is turn 2p/5 upside down.

f = 5/2*pi <<<< Answer

I don't know how simple your marker considers this, but it is the answer.

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step-by-step explanation:

27 + 13x + 15 = (x + 5)( =

step-by-step explanation:

27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( =