How do you calculate, the derivative of ${cos}^{3} x$ $cos^3x$ ?

Question

1819 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-04-11T00:09:06

I would use the Chain Rule to deal separately with the ${()}^{3}$ $()^3$ and $cos$ $cos$ functions getting:
$y'=3cos^2(x)(-sin(x))=-3sin(x)cos^2(x)$

How do you calculate, the derivative of cos^3xcos3xcos^3x?