error_fcn( z )
The complementary error function of z in SageMath. Defined by
\[ \operatorname{erfc} (z) = \frac{ 2 }{ \sqrt{\pi} } \int_z^\infty dt \; e^{-t^2} \]Plot on the real axis:
Series expansion about the origin:
Special values:
Related functions: erf
Function category: gamma functions sagemath-docs