C

n=sqrt(1.954280294-0.0018197*pow(x,2)+0.00906961*pow(x,-2)-0.00016629*pow(x,-4)+6.7645e-5*pow(x,-6))

Python

n=(1.954280294-0.0018197*x**2+0.00906961*x**-2-0.00016629*x**-4+6.7645e-5*x**-6)**.5

Fortran

n=SQRT(1.954280294-0.0018197*x**2+0.00906961*x**-2-0.00016629*x**-4+6.7645e-5*x**-6)

MATLAB

n=sqrt(1.954280294-0.0018197.*x.^2+0.00906961.*x.^-2-0.00016629.*x.^-4+6.7645e-5.*x.^-6)

LaTeX

n^2=1.954280294-0.0018197λ^{2}+0.00906961λ^{-2}-0.00016629λ^{-4}+6.7645\text{×}10^{-5}λ^{-6}