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

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

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


(2*cos(x)-cos(2*x))'

(2*cos(x))'+(-cos(2*x))'

(2)'*cos(x)+2*(cos(x))'+(-cos(2*x))'

0*cos(x)+2*(cos(x))'+(-cos(2*x))'

0*cos(x)+2*(-sin(x))+(-cos(2*x))'

-2*sin(x)-sin(2*x)*(2*x)'

-2*sin(x)-sin(2*x)*((2)'*x+2*(x)')

-2*sin(x)-sin(2*x)*(0*x+2*(x)')

-2*sin(x)-sin(2*x)*(0*x+2*1)

2*(-sin(2*x))-2*sin(x)

2*sin(2*x)-(2*sin(x))

The calculation above is a derivative of the function f (x)

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