C

n=sqrt(2.39698774-0.00814093911*pow(x,2)+0.0141635533*pow(x,-2)-1.31826571e-05*pow(x,-4)+3.09378511e-05*pow(x,-6)-1.33359749e-06*pow(x,-8))

Python

n=(2.39698774-0.00814093911*x**2+0.0141635533*x**-2-1.31826571e-05*x**-4+3.09378511e-05*x**-6-1.33359749e-06*x**-8)**.5

Fortran

n=SQRT(2.39698774-0.00814093911*x**2+0.0141635533*x**-2-1.31826571e-05*x**-4+3.09378511e-05*x**-6-1.33359749e-06*x**-8)

MATLAB

n=sqrt(2.39698774-0.00814093911.*x.^2+0.0141635533.*x.^-2-1.31826571e-05.*x.^-4+3.09378511e-05.*x.^-6-1.33359749e-06.*x.^-8)

LaTeX

n^2=2.39698774-0.00814093911λ^{2}+0.0141635533λ^{-2}-1.31826571\text{×}10^{-05}λ^{-4}+3.09378511\text{×}10^{-05}λ^{-6}-1.33359749\text{×}10^{-06}λ^{-8}