C

n=sqrt(3.1540011-0.013256753*pow(x,2)+0.034103312*pow(x,-2)+0.0018472167*pow(x,-4)-0.00010807332*pow(x,-6)+1.2975901e-05*pow(x,-8))

Python

n=(3.1540011-0.013256753*x**2+0.034103312*x**-2+0.0018472167*x**-4-0.00010807332*x**-6+1.2975901e-05*x**-8)**.5

Fortran

n=SQRT(3.1540011-0.013256753*x**2+0.034103312*x**-2+0.0018472167*x**-4-0.00010807332*x**-6+1.2975901e-05*x**-8)

MATLAB

n=sqrt(3.1540011-0.013256753.*x.^2+0.034103312.*x.^-2+0.0018472167.*x.^-4-0.00010807332.*x.^-6+1.2975901e-05.*x.^-8)

LaTeX

n^2=3.1540011-0.013256753λ^{2}+0.034103312λ^{-2}+0.0018472167λ^{-4}-0.00010807332λ^{-6}+1.2975901\text{×}10^{-05}λ^{-8}