SOLUTION: Determine the amplitude and the period of the following function then graph it: y=-cos(1/2)x Graphs really confuse me.

Algebra ->  Trigonometry-basics -> SOLUTION: Determine the amplitude and the period of the following function then graph it: y=-cos(1/2)x Graphs really confuse me.       Log On


   

Question 864150: Determine the amplitude and the period of the following function then graph it:
y=-cos(1/2)x
Graphs really confuse me.
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
For a function a*cos(bx) the amplitude is |a| and the period is 2*pi/b


For this function the amplitude is |1| and the period is 2*pi/(1/2)= 4pi.


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