C

n=1.35265+0.00306*pow(x,-2)+0.00002*pow(x,-4)

Python

n=1.35265+0.00306*x**-2+0.00002*x**-4

Fortran

n=1.35265+0.00306*x**-2+0.00002*x**-4

MATLAB

n=1.35265+0.00306.*x.^-2+0.00002.*x.^-4

LaTeX

n=1.35265+0.00306λ^{-2}+0.00002λ^{-4}