Derivative of cos(x)+2*sin(2*x)

Derivative of cos(x)+2*sin(2*x). 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 cos(x)+2*sin(2*x): 


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

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

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

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

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

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

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

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

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

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

4*cos(2*x)-sin(x)

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

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