Jacobi nc
From specialfunctionswiki
The $\mathrm{nc}$ function is defined by $$\mathrm{nc}(u)=\dfrac{1}{\mathrm{cn}(u)},$$ where $\mathrm{cn}$ is the Jacobi cn function.
The $\mathrm{nc}$ function is defined by $$\mathrm{nc}(u)=\dfrac{1}{\mathrm{cn}(u)},$$ where $\mathrm{cn}$ is the Jacobi cn function.
