sin_integral( z )

The sine integral of z in SageMath. Alias of Si. Defined by

\[ \operatorname{Si} (z) = \int_0^z du \: \frac{ \sin(u) }{ u } \]

Plot on the real axis:

Series expansion about the origin:

Special values:

Related functions:   Si

Function category: exponential integrals sagemath-docs