C

n=sqrt(1+0.643356/(1-pow(0.057789/x,2))+0.506762/(1-pow(0.10968/x,2))+3.8261/(1-pow(46.3864/x,2)))

Python

n=(1+0.643356/(1-(0.057789/x)**2)+0.506762/(1-(0.10968/x)**2)+3.8261/(1-(46.3864/x)**2))**.5

Fortran

n=SQRT(1+0.643356/(1-(0.057789/x)**2)+0.506762/(1-(0.10968/x)**2)+3.8261/(1-(46.3864/x)**2))

MATLAB

n=sqrt(1+0.643356./(1-(0.057789./x).^2)+0.506762./(1-(0.10968./x).^2)+3.8261./(1-(46.3864./x).^2))

LaTeX

n^2-1=\frac{0.643356λ^2}{λ^2-0.057789^2}+\frac{0.506762λ^2}{λ^2-0.10968^2}+\frac{3.8261λ^2}{λ^2-46.3864^2}