C

n=sqrt(2.59512882-0.0133017463*pow(x,2)+0.0129505299*pow(x,-2)+0.000946976976*pow(x,-4)-9.28161846e-05*pow(x,-6)+5.07474225e-06*pow(x,-8))

Python

n=(2.59512882-0.0133017463*x**2+0.0129505299*x**-2+0.000946976976*x**-4-9.28161846e-05*x**-6+5.07474225e-06*x**-8)**.5

Fortran

n=SQRT(2.59512882-0.0133017463*x**2+0.0129505299*x**-2+0.000946976976*x**-4-9.28161846e-05*x**-6+5.07474225e-06*x**-8)

MATLAB

n=sqrt(2.59512882-0.0133017463.*x.^2+0.0129505299.*x.^-2+0.000946976976.*x.^-4-9.28161846e-05.*x.^-6+5.07474225e-06.*x.^-8)

LaTeX

n^2=2.59512882-0.0133017463λ^{2}+0.0129505299λ^{-2}+0.000946976976λ^{-4}-9.28161846\text{×}10^{-05}λ^{-6}+5.07474225\text{×}10^{-06}λ^{-8}