InverseJacobiCS

InverseJacobiCS[v, m] gives the inverse Jacobi elliptic function cs⁻¹(v|m).

This is the inverse of the Jacobi elliptic function JacobiCS[u, m], which represents the ratio cn(u|m)/sn(u|m).

Examples

InverseJacobiCS[2, 0.5]

N[InverseJacobiCS[1, 1/2]]

(* Verify inverse property *)
JacobiCS[InverseJacobiCS[v, m], m] // Simplify

*See the official Wolfram Language Reference for more details.