C

n=sqrt(1+1.9558/(1-pow(0.15494/x,2))+1.345/(1-pow(0.0634/x,2))+10.41/(1-pow(27.12/x,2)))

Python

n=(1+1.9558/(1-(0.15494/x)**2)+1.345/(1-(0.0634/x)**2)+10.41/(1-(27.12/x)**2))**.5

Fortran

n=SQRT(1+1.9558/(1-(0.15494/x)**2)+1.345/(1-(0.0634/x)**2)+10.41/(1-(27.12/x)**2))

MATLAB

n=sqrt(1+1.9558./(1-(0.15494./x).^2)+1.345./(1-(0.0634./x).^2)+10.41./(1-(27.12./x).^2))

LaTeX

n^2-1=\frac{1.9558λ^2}{λ^2-0.15494^2}+\frac{1.345λ^2}{λ^2-0.0634^2}+\frac{10.41λ^2}{λ^2-27.12^2}