Homework Help: Pre Cal.

Posted by Madalyn on Wednesday, April 8, 2009 at 10:53am.

State the amplitude, period, and phase shift of the function y=-3cos(3x+ (3pi/2))

Amplitude: 3
Period: 2pi/3
Phase Shift: -pi/2

Am I right?

Pre Cal. - Reiny, Wednesday, April 8, 2009 at 11:08am
yes

Although I would personally like to see it written as
y = -3cos 3(x + pi/2)

that way the phase shift sort of hits you in the face.

Answer this Question

Related Questions

Trig - 4. Write the equation of the cosine function with an amplitude of 1/3, a ...
Pre-calculus - State the period, phase shift, and vertical shift of the function...
Trig/Math - f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase ...
Trig/Math - f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase ...
Trig - 1)y=1-tan(3pi-2x) Find period and phase shift 2)y=-sin(5x+3) Find ...
Trig - what is the amplitude, period, phase shift, and vertical shift of each ...
Trigonometry - 4. Write the equation of the cosine function with an amplitude ...
trig - list the period, amplitude, interval, and phase shift of: g(t)=5/2sint-pi...
Trig/Math - 2. f(x) = 1/4 cos(1/2 x + pi/2). Find the amplitude, period, and ...
Trig/Math - Write the equation of the cosine function with an amplitude of 1, a ...

For Further Reading

First Name:
School Subject:
Answer: