A certain cosine function completes 6 cycles over the interval [0,2π].

Question

Which function rule could model this situation?

f(x)=cos(1/6x)
f(x)=cos(x)+6
f(x)=cos(6x)
f(x)=6cos(x)

Answer 1

6 cycles is 6 * 2π radians
that is 6 x

Answer 2

so the third one?

Answer 3

Yes