It seems like you are providing a function $f(x, y) = \frac{xy - 5}{\sqrt{y - x^2}}$.

Is that correct? If so, are you looking for any specific analysis or solution regarding this function (such as partial derivatives, domain, range, etc.)?

Let me know how you'd like to proceed!

Here are some related questions you might find interesting:

1. What is the domain of this function?
2. How do you calculate the partial derivatives of this function with respect to $x$ and $y$?
3. What are the critical points of this function?
4. How do we determine the limit of $f(x, y)$ as $x \to 0$ and $y \to 0$?
5. How do we find the behavior of $f(x, y)$ near the boundary of its domain?

Tip: For functions involving square roots, it's important to identify where the expression inside the root is non-negative to ensure the function is defined.