C

n=sqrt(2.7359+0.01878/(pow(x,2)-0.01822)-0.01471*pow(x,2)+0.0006081*pow(x,4)-0.00006740*pow(x,6))

Python

n=(2.7359+0.01878/(x**2-0.01822)-0.01471*x**2+0.0006081*x**4-0.00006740*x**6)**.5

Fortran

n=SQRT(2.7359+0.01878/(x**2-0.01822)-0.01471*x**2+0.0006081*x**4-0.00006740*x**6)

MATLAB

n=sqrt(2.7359+0.01878./(x.^2-0.01822)-0.01471.*x.^2+0.0006081.*x.^4-0.00006740.*x.^6)

LaTeX

n^2=2.7359+\frac{0.01878}{λ^2-0.01822}-0.01471λ^{2}+0.0006081λ^{4}-0.00006740λ^{6}