C

n=sqrt(1+1.626945/(1-0.008757497/pow(x,2))+0.1906681/(1-0.03779724/pow(x,2))+1.281079/(1-123.7784/pow(x,2)))

Python

n=(1+1.626945/(1-0.008757497/x**2)+0.1906681/(1-0.03779724/x**2)+1.281079/(1-123.7784/x**2))**.5

Fortran

n=SQRT(1+1.626945/(1-0.008757497/x**2)+0.1906681/(1-0.03779724/x**2)+1.281079/(1-123.7784/x**2))

MATLAB

n=sqrt(1+1.626945./(1-0.008757497./x.^2)+0.1906681./(1-0.03779724./x.^2)+1.281079./(1-123.7784./x.^2))

LaTeX

n^2-1=\frac{1.626945λ^2}{λ^2-0.008757497}+\frac{0.1906681λ^2}{λ^2-0.03779724}+\frac{1.281079λ^2}{λ^2-123.7784}