Definition:Primitive (Calculus)/Indefinite Integral
From the Fundamental Theorem of Calculus, it is apparent that to find the value of a definite integral for a function between two points, one can find the value of the primitive of the function at those points and subtract one from the other.
Thus arises the notation:
- $\ds \int \map f x \rd x = \map F x + C$
where $C$ is the arbitrary constant.
In this context, the expression $\ds \int \map f x \rd x$ is known as the indefinite integral of $f$.