Derivative of cos(x)-cos(2x)

Derivative of cos(x)-cos(2x). Simple step by step solution, to learn. Simple, and easy to understand, so dont hesitate to use it as a solution of your homework.

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Derivative of cos(x)-cos(2x):

(cos(x)-cos(2*x))'(cos(x))'+(-cos(2*x))'(-cos(2*x))'-sin(x)-sin(x)-sin(2*x)*(2*x)'-sin(x)-sin(2*x)*((2)'*x+2*(x)')-sin(x)-sin(2*x)*(0*x+2*(x)')-sin(x)-sin(2*x)*(0*x+2*1)2*(-sin(2*x))-sin(x)2*sin(2*x)-sin(x)`
The calculation above is a derivative of the function f (x)