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- Derivatives of sin x, cos x, tan x, e^x and ln x | Product ...... Sin(x^2+2). How would you take the derivative when it's ... You'll need to use the Chain Rule for differentiation ... Chain rule again. => (2Sin(x)Cos(x))/(Sin^2 ...
- Derivative of sin^2 - Physics Forums... sin^2(x)[/itex] is not [itex]cos^2(x) ... We need two applications of the chain rule. ... Then to evaluate the derivative of Sin 2x, apply chain rule a second ...
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- Deriative of cosine squared x - Answers.comd/dx (cos x)^2 using the rule of chain, take derivative of the external, times derivative of the internal = 2 (cos x)(-sin x) =-2sinx cos x = - sin(2x)