To determine if a function has vertical asymptotes, we typically look for points where the function approaches infinity, often due to division by zero in rational functions.

Please provide the specific functions or questions you have in mind, and I can analyze them for vertical asymptotes.

Would you like to share any specific functions? Here are some related questions to consider:

1. What type of function are you analyzing (rational, polynomial, etc.)?
2. Have you identified points where the denominator is zero?
3. Are there any discontinuities in the function?
4. How does the function behave as it approaches those points?
5. Would you like to explore horizontal or oblique asymptotes as well?

Tip: Always factor the denominator to identify possible vertical asymptotes more easily.