Asked by Ty

Differentiate

ln(cos(2x))
Answered by Steve
just use the chain rule

d/dx ln(u) = 1/u du/dx

d/dx ln(cos(2x)) = 1/cos(2x) (-2sin(2x)) = -2tan(2x)
Answered by Ms.Vargas
3\4 3\1 3\6
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