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Cosine: Derivative
(Math | Algebra | Functions | Derivative)

 

Cosine: Derivative

[d/dx](cos(x)) = -sin(x)

Alternate notation
cos'(u) = -sin(u)u'
D(cos(u)) = -sin(u)D(u)
dcos(u) = -sin(x)du
See the derivation of this.

  
 
  

 
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