# Definition:Fresnel Sine Integral Function

## Definition

The Fresnel sine integral function is the real function $\R \to \R$ defined by:

$\displaystyle \map {\operatorname S} x = \sqrt {\frac 2 \pi} \int_0^x \sin u^2 \rd u$

## Also see

• Results about the Fresnel sine integral function can be found here.

## Source of Name

This entry was named for Augustin-Jean Fresnel.