#### Mathematics online > Derivative > Basic examples > Solved exercises > Advanced math level > Solution 2.1

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### Derivative : solution exercise 2.1 (Advanced math level)

2.1 Very difficult and mean derivatives

Calculate the derivative of the following function and simplify your answer as much as possible. Reminder:

 2 . sin(x) . cos(x) = sin(2x) It is possible to simplify further this answer using other trigonometric functions. However we will let you explore that alone,... it is important to be able to do that alone, then please do it !

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