En(1, z )

The En(n,z) in Math. Defined by

En(n,z)=∫∞1exp(−z∗t)tn=z(n−1)Γ(1−n,z)

En(1,z)=Γ(0,z)=−Ei(−x)

En(x,y) in 3D graph.

Real part on the real axis:

-5.0 -2.5 2.5 5.0 -5.0 -2.5 2.5 5.0

Imaginary part on the real axis:

-5.0 -2.5 2.5 5.0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5

Real part on the imaginary axis:

-5.0 -2.5 2.5 5.0 -1.0 -0.5 0.5 1.0 1.5 2.0 2.5

Imaginary part on the imaginary axis:

-5.0 -2.5 2.5 5.0 -1.5 -1.0 -0.5 0.5 1.0 1.5

Real part on the complex plane:

Imaginary part on the complex plane:

Absolute value on the complex plane:

Related functions:   log

Function category: logarithmic functions