C

n=sqrt(1+0.83189/(1-0.00930/pow(x,2))-0.15582/(1+49.45200/pow(x,2)))

Python

n=(1+0.83189/(1-0.00930/x**2)-0.15582/(1+49.45200/x**2))**.5

Fortran

n=SQRT(1+0.83189/(1-0.00930/x**2)-0.15582/(1+49.45200/x**2))

MATLAB

n=sqrt(1+0.83189./(1-0.00930./x.^2)-0.15582./(1+49.45200./x.^2))

LaTeX

n^2-1=\frac{0.83189λ^2}{λ^2-0.00930}+\frac{-0.15582λ^2}{λ^2+49.45200}