SOLUTION: Sketch one period of the following trigonometric graphs: a.) cos^2(x) b.) |sin x| c.) y= 3 cos (4x) - 1 I am not certain about my answers...can someone show me how it will

Question 47861: Sketch one period of the following trigonometric graphs:
a.) cos^2(x)
b.) |sin x|
c.) y= 3 cos (4x) - 1
I am not certain about my answers...can someone show me how it will look? thanks i really need the help.
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
a.) f(x) = cos^2(x) = cos(x)^2
This means that there are no negative values, but there are zero values.

Period:
b.) f(x) = |sin(x)| = sqrt(sin(x)^2)
This means that there are no negative values, but there are zero values once again.

Period:
c.) f(x) = 3*cos(4x) - 1
Period: where is the coefficient =

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