Derivative of cos2x Formula
Formula for derivative of cos2x is added below as,
d/dx[cos2x] = -2cosx.sinx
(cos2x)’ = -2cosx.sinx
We can derive it using the below-mentioned methods:
- First Principle of Differentiation
- Chain Rule
- Product Rule
Let us discuss these methods in detail one by one as follows.
Derivative of Cos Square x
Derivative of cos2x is (-2cosxsinx) which is equal to (-sin 2x). Cos2x is square of trigonometric function cos x. Derivative refers to the process of finding the change in the cos2x function with respect to the independent variable.
In this article, we will discuss the derivative of cos2x with various methods to find it including the first principle of differentiation, chain rule, and the product rule, solved examples, and some practice problems on it.