Need tutor
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9 Dec 2011, 21:50
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HAI GUIS!
I got finals coming up and I need help with Math cause no one is avi at my house right now to help me. At the moment I'm covering the graphs of the trig functions and their inverses and shit. So if you have any knowledge on that pmme.
I got finals coming up and I need help with Math cause no one is avi at my house right now to help me. At the moment I'm covering the graphs of the trig functions and their inverses and shit. So if you have any knowledge on that pmme.
Graphis of tangent and secant (Phase shifting, amplitude, periods)
ALL armonics function, looks like that:
x(t)=Asin(wt+q).
-- (wt+q) is called phase.
http://upload.wikimedia.org/wikipedia/commons/thumb/5/55/Phase_shift.svg/220px-Phase_shift.svg.png
when q (in that figure is the greek alfabetical letter called "teta") is zero, two sine/cosine functions are called "in phase".
(think at djs mixing..when you listen two songs kick perfectly sounding one over the other, they are in sync (same phase) ) that means, for instance, that have same longwave and stuff.
A is called Amplitude.
OFC the argument of sine, CAN't be major than 1. ( and that because if u look at sine graph http://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Sinus.svg/298px-Sinus.svg.png he goes from 1 to -1 MAX in the y axis)
What's the phase shift in there? I know its pi/4, but the computer is telling me it's wrong.
If it was algebra I would have never needed help.
Thanks tho! :)
if you have y=asin(bx+c) the phase shift is given by -c/b
in your case y=-3sin(2x+pi/2) therefore the phase shift is -(pi/2)/2 = -pi/4
->getting sin 0 is the the goal!?
> searching for tutors on crossfire
sufficient for american education system
npthankmelater