C

n=sqrt(2.8262394-0.012783119*pow(x,2)+0.017254526*pow(x,-2)+0.00043487714*pow(x,-4)-1.9342271e-05*pow(x,-6)+1.18082e-06*pow(x,-8))

Python

n=(2.8262394-0.012783119*x**2+0.017254526*x**-2+0.00043487714*x**-4-1.9342271e-05*x**-6+1.18082e-06*x**-8)**.5

Fortran

n=SQRT(2.8262394-0.012783119*x**2+0.017254526*x**-2+0.00043487714*x**-4-1.9342271e-05*x**-6+1.18082e-06*x**-8)

MATLAB

n=sqrt(2.8262394-0.012783119.*x.^2+0.017254526.*x.^-2+0.00043487714.*x.^-4-1.9342271e-05.*x.^-6+1.18082e-06.*x.^-8)

LaTeX

n^2=2.8262394-0.012783119λ^{2}+0.017254526λ^{-2}+0.00043487714λ^{-4}-1.9342271\text{×}10^{-05}λ^{-6}+1.18082\text{×}10^{-06}λ^{-8}