Need help with this!

Find the period, range, and amplitude o the cosine function y=3/2 cost/2.

How do you find the period for a graph?
open this link the view the graph...i am unsure on how to find the period. Link: http://schools.connectionsacademy.com/content/media/102877-5272010-92002-PM-1855950374/res00000/ppg/examview/images/mc009-1.jpg

Last one
Write the equation of the cosine function with amplitude 2 period 4p

Question

Need help with this!

Find the period, range, and amplitude o the cosine function y=3/2 cost/2.

How do you find the period for a graph?
open this link the view the graph...i am unsure on how to find the period. Link: http://schools.connectionsacademy.com/content/media/102877-5272010-92002-PM-1855950374/res00000/ppg/examview/images/mc009-1.jpg

Last one
Write the equation of the cosine function with amplitude 2 period 4p

amistre64 · Answer

cos(t/2) means that it takes twice as long to complete one cycle.... since the normal period for cos = 2pi; this takes:

2pi
--- = 4pi for one period
1/2

amistre64 · Answer

the easiest way to determine it is just to plug in '2pi' for sin and cos graphs and see tha the answer is...

amistre64 · Answer

when t = 2pi; we should equal 0 normally

2pi/2 = pi; which is only half the cycle; so 4pi to complete it:

4pi/2 = 2pi

amistre64 · Answer

that has computational flaws in it; but the theory is sound lol

anonymous · Answer

long answer superduper?

anonymous · Answer

lol