C

n=sqrt(2.798858-0.03718093*pow(x,2)+0.007630191*pow(x,-2)+0.007231691*pow(x,-4)-0.0008073847*pow(x,-6)+4.696667e-05*pow(x,-8))

Python

n=(2.798858-0.03718093*x**2+0.007630191*x**-2+0.007231691*x**-4-0.0008073847*x**-6+4.696667e-05*x**-8)**.5

Fortran

n=SQRT(2.798858-0.03718093*x**2+0.007630191*x**-2+0.007231691*x**-4-0.0008073847*x**-6+4.696667e-05*x**-8)

MATLAB

n=sqrt(2.798858-0.03718093.*x.^2+0.007630191.*x.^-2+0.007231691.*x.^-4-0.0008073847.*x.^-6+4.696667e-05.*x.^-8)

LaTeX

n^2=2.798858-0.03718093λ^{2}+0.007630191λ^{-2}+0.007231691λ^{-4}-0.0008073847λ^{-6}+4.696667\text{×}10^{-05}λ^{-8}