C

n=1.321743411+0.009941336*pow(x,-2)-0.000890957*pow(x,-4)

Python

n=1.321743411+0.009941336*x**-2-0.000890957*x**-4

Fortran

n=1.321743411+0.009941336*x**-2-0.000890957*x**-4

MATLAB

n=1.321743411+0.009941336.*x.^-2-0.000890957.*x.^-4

LaTeX

n=1.321743411+0.009941336λ^{-2}-0.000890957λ^{-4}