C

n=sqrt(1+0.31021+0.84903/(1-0.00876/pow(x,2))+0.53607/(1-134.95660/pow(x,2)))

Python

n=(1+0.31021+0.84903/(1-0.00876/x**2)+0.53607/(1-134.95660/x**2))**.5

Fortran

n=SQRT(1+0.31021+0.84903/(1-0.00876/x**2)+0.53607/(1-134.95660/x**2))

MATLAB

n=sqrt(1+0.31021+0.84903./(1-0.00876./x.^2)+0.53607./(1-134.95660./x.^2))

LaTeX

n^2-1=0.31021+\frac{0.84903λ^2}{λ^2-0.00876}+\frac{0.53607λ^2}{λ^2-134.95660}