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dirichletEta( z )

The Dirichlet eta function of z in Math. Defined by

η(z)=∞∑k=1(−1)k−1kz

Related to the Riemann zeta function by

η(z)=(1−21−z)ζ(z)

Real part on the real axis:

-10 -5 5 10 2.5 5.0 7.5

Imaginary part on the real axis is zero.

Real part on the imaginary axis:

-10 -5 5 10 -1 1 2

Imaginary part on the imaginary axis:

-10 -5 5 10 -2 -1 1 2

Real part on the complex plane:

Imaginary part on the complex plane:

Absolute value on the complex plane:

Related functions:   zeta

Function category: zeta functions