To determine the domain of a function, we need to identify all possible values of $x$ (input values) for which the function is defined. The domain typically involves looking for restrictions that might cause the function to be undefined, such as:

1. Division by zero: Functions that involve a denominator cannot have values of $x$ that make the denominator zero.
2. Square roots of negative numbers: Functions with square roots (or even roots) require the radicand (the expression under the square root) to be non-negative if dealing with real numbers.
3. Logarithms: Logarithmic functions require the argument to be strictly positive.

If you provide the function, I can walk you through its specific domain.

Would you like me to analyze a specific function? Feel free to share it!