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.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this