C

n=sqrt(1+3.4834+1.7316/(1-0.1453/pow(x,2))+1.7785/(1-738.43/pow(x,2)))

Python

n=(1+3.4834+1.7316/(1-0.1453/x**2)+1.7785/(1-738.43/x**2))**.5

Fortran

n=SQRT(1+3.4834+1.7316/(1-0.1453/x**2)+1.7785/(1-738.43/x**2))

MATLAB

n=sqrt(1+3.4834+1.7316./(1-0.1453./x.^2)+1.7785./(1-738.43./x.^2))

LaTeX

n^2-1=3.4834+\frac{1.7316λ^2}{λ^2-0.1453}+\frac{1.7785λ^2}{λ^2-738.43}