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Calculus › The definite integral › antiderivative

antiderivative

The definite integral

The antiderivative of a function is a function whose derivative is the original function. Each function has an infinite number of antiderivatives that differ by a constant, which is represented by the constant of integration. The general antiderivative includes this constant to account for all possible antiderivatives of a given function.

Definition
G=g

Interpretation

The antiderivative of a function is interpreted as a family of functions whose derivatives yield the original function, with the inclusion of an arbitrary constant to account for the infinite possibilities of antiderivatives.

Notation

F(x)=ln(|x|)+C

Conditions and Properties

The general antiderivative of a function includes an arbitrary constant term, reflecting the fact that multiple functions can share the same derivative. The inclusion of this constant ensures that the antiderivative is as general as possible, provided the original function is continuous.

Applications

An antiderivative plays a crucial role in applications such as determining position from velocity, where the antiderivative of a velocity function yields a position function that satisfies the relationship between velocity and position. In this context, the antiderivative provides a means to calculate the change in position over a given interval, which corresponds to the total distance traveled by an object when the velocity is positive.

Notes & references