The given equation is:

$H = \frac{V - x}{\ln\left(\frac{V - r}{x - r}\right)}$

This equation expresses $H$ in terms of $V$, $x$, and $r$.

If you need help solving this equation for a particular variable or substituting values, please provide more details or specify what you need assistance with.

Do you have any specific questions about this equation, or would you like a detailed explanation of how it works?

---

Related Questions:

1. How would you solve this equation for $x$ in terms of $H$, $V$, and $r$?
2. What is the significance of the natural logarithm function in this equation?
3. Can this equation be simplified further under certain conditions?
4. What are some potential applications of this type of equation in real-world scenarios?
5. How would you differentiate this equation with respect to $x$?
6. What happens to $H$ as $x$ approaches $V$?
7. How would you compute the value of $H$ if specific numerical values were given for $V$, $x$, and $r$?
8. How does the equation behave if $r$ is set to zero?

Tip: When working with logarithmic functions, it's essential to ensure that the arguments inside the logarithm are positive to avoid undefined values.