Find the period of y = 3cos(x/2 + pi)

[confused0874]

But Iam missing something. The questions is as follows:

Find the period of the graph of the equation y=3cos(x/2 + pi)

I have gotten two different answers for this, so Iam hoping to see what i have or haven't done correctly.

Thanks

 

[stapel]

I have gotten two different answers for this, so Iam hoping to see what i have or haven't done correctly.

The tutors will be glad to help you check your work, but you will need to post it first.

Thank you.

Eliz.