Question
A sound wave is modeled with the equation y= 1/4 cos2pi/3 theta.
a. Find the period. Explain your method.
b. Find the amplitude. Explain your method.
c. What is the equation of the midline? What does it represent?
a) Period: 2pi/b 3 units
T= 2pi/2pi/3 = 2pi/1 *3/2pi = 3
b) ¼ The amplitude is the multiplier in the beginning of the equation.
c) y=0 there is no y-shift and it represents the neutral positio.
Are my answers correct?
a. Find the period. Explain your method.
b. Find the amplitude. Explain your method.
c. What is the equation of the midline? What does it represent?
a) Period: 2pi/b 3 units
T= 2pi/2pi/3 = 2pi/1 *3/2pi = 3
b) ¼ The amplitude is the multiplier in the beginning of the equation.
c) y=0 there is no y-shift and it represents the neutral positio.
Are my answers correct?
Answers
Reiny
I agree with your answers