C

n=sqrt(2.653252-0.006578821*pow(x,2)+0.02439776*pow(x,-2)+0.0005194976*pow(x,-4)+2.48777e-05*pow(x,-6)+1.560994e-06*pow(x,-8))

Python

n=(2.653252-0.006578821*x**2+0.02439776*x**-2+0.0005194976*x**-4+2.48777e-05*x**-6+1.560994e-06*x**-8)**.5

Fortran

n=SQRT(2.653252-0.006578821*x**2+0.02439776*x**-2+0.0005194976*x**-4+2.48777e-05*x**-6+1.560994e-06*x**-8)

MATLAB

n=sqrt(2.653252-0.006578821.*x.^2+0.02439776.*x.^-2+0.0005194976.*x.^-4+2.48777e-05.*x.^-6+1.560994e-06.*x.^-8)

LaTeX

n^2=2.653252-0.006578821λ^{2}+0.02439776λ^{-2}+0.0005194976λ^{-4}+2.48777\text{×}10^{-05}λ^{-6}+1.560994\text{×}10^{-06}λ^{-8}