C

n=sqrt(2.554362-0.0165228*pow(x,2)+0.01560256*pow(x,-2)+0.001407955*pow(x,-4)-0.0001318867*pow(x,-6)+8.507447e-06*pow(x,-8))

Python

n=(2.554362-0.0165228*x**2+0.01560256*x**-2+0.001407955*x**-4-0.0001318867*x**-6+8.507447e-06*x**-8)**.5

Fortran

n=SQRT(2.554362-0.0165228*x**2+0.01560256*x**-2+0.001407955*x**-4-0.0001318867*x**-6+8.507447e-06*x**-8)

MATLAB

n=sqrt(2.554362-0.0165228.*x.^2+0.01560256.*x.^-2+0.001407955.*x.^-4-0.0001318867.*x.^-6+8.507447e-06.*x.^-8)

LaTeX

n^2=2.554362-0.0165228λ^{2}+0.01560256λ^{-2}+0.001407955λ^{-4}-0.0001318867λ^{-6}+8.507447\text{×}10^{-06}λ^{-8}