Find Amplitude & Period...Part B

[harpazo]

Find the amplitude and period of the following functions.

1. y = - 2 - 2 cos (3pi•x)

2. y = 1 + sin (2x)

Question 1

Let A = amplitude

A = |-2|

A = 2

Let P = period

Let B = coefficient of x

P = 2pi/B

P = 2pi/3pi

P = 2/3

Yes?

Question 2

A = |1|

A = 1

P = 2pi/B

P = 2pi/2

P = π ..................................corrected

Yes?

 

[Dr.Peterson]

#1: Correct

#2: Check what you wrote; you probably didn't really mean P = 1.

 

[harpazo]

#1: Correct

#2: Check what you wrote; you probably didn't really mean P = 1.

I see the typo. For Question 2, I meant to say P = pi.