Question

Choose the function whose graph is given by:
**Graph will be shown in a moment**

a. y = 2cos(3x)
b. y = -2cos(3x)
c. y = 2cos((pi/2)x)
d. y = 2cos((1/3)x)

Answer 1

amplitude =2

Answer 2

\(period = 2\pi/3\)

Answer 3

f = 1/period = \(3/2\pi\)

y = \(A cos(2\pi*f\ x\)\)

y = \(2 cos(2\pi* 3/2\pi\ x)\)

Answer 4

y = 2cos(3x)