Derivative

f' represents the derivative of a function f of one argument.

Derivative[n1, n2, ...][f] represents a function obtained from f by differentiating n1 times with respect to the first argument, n2 times with respect to the second argument, and so on.

Examples

First derivative:

f'[x]
(* f'[x] *)

Compute derivative of sine:

Sin'[x]
(* Cos[x] *)

Second derivative:

Derivative[2][f][x]
(* f''[x] *)

Please visit the official Wolfram Language Reference for more details.