# Implement the "Wolontis" Function

While looking at old ALGOL documentation with someone else on Discord, this "famous" function popped up:

[![An image claiming to show "the famous Wolontis Function"][1]][1]

Although it’s mentioned in other language manuals of the era, such as Runcible and FORTRAN, we haven't managed to find any references to this function online — so let's change that.

The expression in the image is \$\frac{\sin x}{\sqrt{1-e^{-x^3}}}\$. Your task is to implement this function for positive inputs, as its value is undefined at \$x=0\$ and imaginary for negative \$x\$.

[tag:code-golf] [tag:math]

---

## Sandbox questions

 - How accurate/precise should answers be required to be?
 - What other tags should I add?
 - Any other information I should include? e.g. would a graph be helpful?

  [1]: https://i.sstatic.net/CF6IE.png