SOLUTION: Find the amplitude, period and displacement of the function below and use this information to sketch its graph y=cos(2x+2pi/3) amp=1 period=pi displacement=-2pi/6 Ithink B

Algebra ->  Trigonometry-basics -> SOLUTION: Find the amplitude, period and displacement of the function below and use this information to sketch its graph y=cos(2x+2pi/3) amp=1 period=pi displacement=-2pi/6 Ithink B      Log On


   

Question 564783: Find the amplitude, period and displacement of the function below and use this information to sketch its graph
y=cos(2x+2pi/3)
amp=1
period=pi
displacement=-2pi/6 Ithink
But I cant figure out how to do all plotting points to graph please help me!!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the amplitude, period and displacement of the function below and use this information to sketch its graph
y=cos(2x+2pi/3)
amp=1
period=pi
displacement=-2pi/6 = -(1/3)pi
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You have all the information you need.
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Start the peak of the cosine curve x = -(1/3)pi.
The y-intercept is at (0,cos((2/3)pi) = (0, -1/2)
continue the curve to the right and to the left
remembering that the period is pi.
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graph%28400%2C400%2C-6%2C6%2C-2%2C2%2Ccos%282x%2B%282%2F3%29pi%29%29
===================
Cheers,
Stan H.