Jacobi nd

The $\mathrm{nd}$ function is defined by $$\mathrm{nd}(u)=\dfrac{1}{\mathrm{dn}(u)},$$ where $\mathrm{dn}$ is the Jacobi dn function.

References

Special functions by Leon Hall

Jacobi Elliptic Functions

Jacobi $\mathrm{cn}$

Jacobi $\mathrm{cd}$

Jacobi $\mathrm{cs}$

Jacobi $\mathrm{dc}$

Jacobi $\mathrm{dn}$

Jacobi $\mathrm{ds}$

Jacobi $\mathrm{nc}$

Jacobi $\mathrm{nd}$

Jacobi $\mathrm{ns}$

Jacobi $\mathrm{sc}$

Jacobi $\mathrm{sd}$

Jacobi $\mathrm{sn}$