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