Question

Choose the function whose graph is given by:

Answer 1

a. \[y = 2\cos(\frac{ \pi }{ 2 } x)\]
b. y = -2cos(3x)
c.\[ y = 2\cos(\frac{ 1 }{ 3 } x)\]
d. y = 2cos(3x)

Answer 2

you need to assume the value of x and then subsitute in the choices

Answer 3

huh?

Answer 4

the graph shows that the amplitude is 2, and the period is 2pi/3, write the function in the form: