DefinitionAn Antiderivative of a Function f(x) is defined as another function F(x)whose derivative is equal to f(x). In terms of integral calculus, F(x)is the antiderivative of f(x), that helps to find the area under the curves defined by f(x). For example, an antiderivative of function f(x)=2xf (x) =2xf(x)=2x is going to be F(x)=x2+C F(x) =x2+C F(x)=x2+C, where C is the constant of integration and it represents solutions.