# Derivative of (3*cos(x))

## Derivative of (3*cos(x)). 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 (3*cos(x)):

(3*cos(x))'(3)'*cos(x)+3*(cos(x))'0*cos(x)+3*(cos(x))'0*cos(x)+3*(-sin(x))-3*sin(x)`
The calculation above is a derivative of the function f (x)