C

n=sqrt(2.718364-0.009306715*pow(x,2)+0.02090148*pow(x,-2)+0.0001588714*pow(x,-4)+4.065932e-05*pow(x,-6)-8.563966e-07*pow(x,-8))

Python

n=(2.718364-0.009306715*x**2+0.02090148*x**-2+0.0001588714*x**-4+4.065932e-05*x**-6-8.563966e-07*x**-8)**.5

Fortran

n=SQRT(2.718364-0.009306715*x**2+0.02090148*x**-2+0.0001588714*x**-4+4.065932e-05*x**-6-8.563966e-07*x**-8)

MATLAB

n=sqrt(2.718364-0.009306715.*x.^2+0.02090148.*x.^-2+0.0001588714.*x.^-4+4.065932e-05.*x.^-6-8.563966e-07.*x.^-8)

LaTeX

n^2=2.718364-0.009306715λ^{2}+0.02090148λ^{-2}+0.0001588714λ^{-4}+4.065932\text{×}10^{-05}λ^{-6}-8.563966\text{×}10^{-07}λ^{-8}