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posted by Anonymous .
Differentiate cos^2 x w/ respect to x

Math 
scott
d/dx [cos(x)]^2 = 2 cos(x) * [sin(x)]
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Differentiate cos^2 x w/ respect to x 
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Differentiate cos^2 x w/ respect to x. 
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Differentiate with respect to (t). y = d cos(t) + (t^2)sin(t) 
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How would I differentiate y = 4cos(2x)cos(3x) u = cos(2x) u' = 2sin(2x) v = cos(3x) v' = 3sin(3x) This is all I have so far