SOLUTION: Find the domain, period, range, and amplitude of the cosine function. y = -6cos4x I need to know how to get the answer to this.

Algebra ->  Trigonometry-basics -> SOLUTION: Find the domain, period, range, and amplitude of the cosine function. y = -6cos4x I need to know how to get the answer to this.      Log On


   

Question 599926: Find the domain, period, range, and amplitude of the cosine function.
y = -6cos4x
I need to know how to get the answer to this.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Find the domain, period, range, and amplitude of the cosine function.
y = -6cos4x
**
Equation for cos function:
Y=Acos(Bx-C), A=amplitude, Period=2π/B, Phase shift=C/B
For given equation: y=-6cos4x
Phase shift: none
Amplitude=6
B=4
Period:2π/B=2π/4=π/2
Range: [-6,6]
Domain:(-∞,∞)