C

n=sqrt(1+0.47558+0.5600/(1-pow(0.138/x,2))+0.14493/(1-pow(0.166/x,2))+2.74000/(1-pow(85.84/x,2)))

Python

n=(1+0.47558+0.5600/(1-(0.138/x)**2)+0.14493/(1-(0.166/x)**2)+2.74000/(1-(85.84/x)**2))**.5

Fortran

n=SQRT(1+0.47558+0.5600/(1-(0.138/x)**2)+0.14493/(1-(0.166/x)**2)+2.74000/(1-(85.84/x)**2))

MATLAB

n=sqrt(1+0.47558+0.5600./(1-(0.138./x).^2)+0.14493./(1-(0.166./x).^2)+2.74000./(1-(85.84./x).^2))

LaTeX

n^2-1=0.47558+\frac{0.5600λ^2}{λ^2-0.138^2}+\frac{0.14493λ^2}{λ^2-0.166^2}+\frac{2.74000λ^2}{λ^2-85.84^2}