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Old November 17th, 2008, 06:44 PM
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skeeter skeeter is offline
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your solutions are correct

for y = A\cos[B(x+C)] + D

|A| is the amplitude

\frac{2\pi}{|B|} is the period

C is the phase shift ... (+) left , (-) right

D is the vertical shift ... (+) up, (-) down


btw ... for future reference, the Greek letter \pi is spelled "pi".




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