C

n=sqrt(1+0.83086+1.08807/(1-0.0313810/pow(x,2))+0.554582/(1-158.76/pow(x,2)))

Python

n=(1+0.83086+1.08807/(1-0.0313810/x**2)+0.554582/(1-158.76/x**2))**.5

Fortran

n=SQRT(1+0.83086+1.08807/(1-0.0313810/x**2)+0.554582/(1-158.76/x**2))

MATLAB

n=sqrt(1+0.83086+1.08807./(1-0.0313810./x.^2)+0.554582./(1-158.76./x.^2))

LaTeX

n^2-1=0.83086+\frac{1.08807λ^2}{λ^2-0.0313810}+\frac{0.554582λ^2}{λ^2-158.76}