Question

The function f(x)=-3cos(3x+Pi/4) has ___ .

Answer 1

Answer:

amplitude = 3

period = $\frac{2\pi }{3}$

Step-by-step explanation:

Comparing the equation with the general equation :

$f(x) = A cos(Bx + c ) + D$

Where :

A = amplitude

period = $\frac{2\pi }{B}$

D = vertical shift

Therefore : with the comparison :

amplitude = /-3/ = 3

period = $\frac{2\pi }{3}$