exp_integral_e( n , z )
The generalized exponential integral of z in SageMath. Defined by
\[ E_n (z) = \int_1^\infty dt \: \frac{ e^{ -zt } }{ t^n } \]Plot on the real axis:
Series expansion about the origin:
Special values:
Related functions: exp_integral_e1
Function category: exponential integrals sagemath-docs