C

n=sqrt(2.2864+1.1280*pow(x,2)/(pow(x,2)-0.0562)-0.0188*pow(x,2))

Python

n=(2.2864+1.1280*x**2/(x**2-0.0562)-0.0188*x**2)**.5

Fortran

n=SQRT(2.2864+1.1280*x**2/(x**2-0.0562)-0.0188*x**2)

MATLAB

n=sqrt(2.2864+1.1280.*x.^2./(x.^2-0.0562)-0.0188.*x.^2)

LaTeX

n^2=2.2864+\frac{1.1280λ^{2}}{λ^2-0.0562}-0.0188λ^{2}