Definition:Primitive (Calculus)/Real

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Definition

Let $F$ be a real function which is continuous on the closed interval $\left[{a \,.\,.\, b}\right]$ and differentiable on the open interval $\left({a \,.\,.\, b}\right)$.

Let $f$ be a real function which is continuous on the open interval $\left({a \,.\,.\, b}\right)$.


Let:

$\forall x \in \left({a \,.\,.\, b}\right): F' \left({x}\right) = f \left({x}\right)$

where $F'$ denotes the derivative of $F$ with respect to $x$.


Then $F$ is a primitive of $f$, and is denoted:

$\displaystyle F = \int f \left({x}\right) \, \mathrm d x$


Also known as

A primitive is also known as an antiderivative.

The term indefinite integral is also popular.


Also see

  • Results about integral calculus can be found here.


Sources