WeierstrassZeta[u, , ] gives the Weierstrass zeta function .
Mathematical function (see Section A.3.10).
Related to WeierstrassP by the differential equation .
WeierstrassZeta is not periodic and is therefore not strictly an elliptic function.
See Section 3.2.11 for a discussion of argument conventions for elliptic and related functions.
See The Mathematica Book: Section 3.2.11.
See also: WeierstrassSigma.