the amplitude (the height) is 3 so the tip and bott0m of the curve goes to 3 and -3.
[the domain:
-theta=<x-theta/2=<theta
-2theta=<2x-theta=<2theta
-theta=<2x=<3theta
-theta/2=<x=<3theta
] er...i dont think what i just typed for the domain is relavent..
umm for period its 2pi/(x-theta/2) i THINK..will some maths pro coorect me im the worse grapher in grammar..
the graph of y=f(x) is like the cos graph you know, except that:
Amplitude = |A|
Period = |2pi/B|
The graph is shifted up by M (or down if M is negative)
The graph if shifted left by C/B (or right if C/B is negative)
If A is negative then remember that the shape of the graph is like upside-down cos.