Question

y=-2cos(3x+(pi/2))

Period=2pi/3

Intervals= ?

Start and End =?

And I must graph it. I am completely Lost Please HELP!

Answer 1

This is what i did and got no points

Answer 2

Can you graph \(y = \cos(x)\)?
Start: (0,1)
Stop: (2\(\pi\),1)
Period: \(2\pi\)
Amplitude: 1
Zeros: (\(\pi/2,0\)) and (\(3\pi/2,0\))

Answer 3

Yes i can

Answer 4

now will the intervals be [-pi/6,pi/6]

Answer 5

How about this one?

y=cos(3x)?
Start: (0,1)
Stop: (2π/3,1)
Period: 2π/3
Amplitude: 1
Zeros: (π/6,0) and (π/2,0)