Question

see attachment for equation. A sound wave is modeled with the given equation.
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?

Answer 1

HI!!!

Answer 2

the period of \(\cos(bx)\) is \[\huge \frac{2\pi}{b}\]

Answer 3

how do i find it though

Answer 4

how do you find \(b\) ?

Answer 5

you have
\[\cos(\frac{2\pi}{3}\theta)\] what is \(b\)?

Answer 6

it is the number in front of \(\theta\)

Answer 7

That is incorrect

Answer 8

It is 3

Answer 9

for the period

Answer 10

you use the equation pb=2pi

Answer 11

the amplitude is the number in front of cosine. In this case, it is 1/4

Answer 12

mid-line is at y=0 because there are no vertical shifts in the equation. The mid-line is where you initiate the amplitude. From the mid-line, you go the distance,up and down, of the amplitude.

***I HOPE I HELPED ****