### Derivative of Trig Functions

The derivatives of trigonometric functions are the rates of change of the values of trigonometric functions with respect to their inputs. The derivatives of the …

The chain rule is a fundamental rule in calculus that allows for the differentiation of composite functions. A composite function is a function that is made up of two or more simpler functions combined in a specific order. The chain rule states that the derivative of a composite function can be found by multiplying the derivative of the outer function by the derivative of the inner function. The chain rule is essential for solving many problems in calculus and is used in areas such as optimization, control theory, and physics.