C

n=sqrt(3.05615-0.0138471*pow(x,2)+0.02431126*pow(x,-2)+0.0004980027*pow(x,-4)-7.318676e-06*pow(x,-6)+1.24041e-06*pow(x,-8))

Python

n=(3.05615-0.0138471*x**2+0.02431126*x**-2+0.0004980027*x**-4-7.318676e-06*x**-6+1.24041e-06*x**-8)**.5

Fortran

n=SQRT(3.05615-0.0138471*x**2+0.02431126*x**-2+0.0004980027*x**-4-7.318676e-06*x**-6+1.24041e-06*x**-8)

MATLAB

n=sqrt(3.05615-0.0138471.*x.^2+0.02431126.*x.^-2+0.0004980027.*x.^-4-7.318676e-06.*x.^-6+1.24041e-06.*x.^-8)

LaTeX

n^2=3.05615-0.0138471λ^{2}+0.02431126λ^{-2}+0.0004980027λ^{-4}-7.318676\text{×}10^{-06}λ^{-6}+1.24041\text{×}10^{-06}λ^{-8}