Writing Find a few practical examples of functions of twoand three variables, and
Chapter 13, Problem 77(choose chapter or problem)
Writing Find a few practical examples of functions of two and three variables, and discuss how physical considerations affect their domains.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer