In calculus, an **antiderivative**, **primitive integral** or **indefinite integral** of a function *f* is a differentiable function *F* whose derivative is equal to *f*, i.e., *F* ′ = *f*. The process of solving for antiderivatives is called **antidifferentiation** (or **indefinite integration**) and its opposite operation is called differentiation, which is the process of finding a derivative. Antiderivatives are related to definite integrals through the fundamental theorem of calculus: the definite integral of a function over an interval is equal to the difference between the values of an antiderivative evaluated at the endpoints of the interval.

The discrete equivalent of the notion of antiderivative is antidifference.

Read more about Antiderivative: Example, Uses and Properties, Techniques of Integration, Antiderivatives of Non-continuous Functions

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