>Nadya:
>
>>What is x/sin(x) where x->0? 1
>
>Correct, but that is not the same 0/0 which is undefined (i.e., mathematically speaking).
>
>Pete

Pete;

There are many branches of mathematics and some have different concepts from others. Within theoretical mathematics things get very interesting! “Normal” mathematics states that 0/0 is not defined. Set theory states 0/0 is 1. When I have created algorithms for Ph.D.’ s, I always have the rules defined. Sometimes you are dealing with abstract concepts.

If you knew some of the Ph.D's I have worked with you would have a better meaning of the word "abstract" as I have experienced it! :)

Tom