Expert: Ahmed Salami - 8/6/2004

Question
Is there any difference between 1/0 and infinity?
why 1/0 is undefine?

Answer
Hi nipu,
In mathematics the numbers 0 and infinity are used rather ambiguously. 0 is used to refer to any number that is infinitesimally small while infinity is on the other side, a very very large number. So if you divide any number by a very small number, you get a very large number. So thats the idea. But note that small and large here are extreme amounts.
As for the other one, if we say that
1/0 = x then,
0.x = 1
we say that x is undefined because there is no number whose product with zero gives us one.
I hope you get everything.
Good luck.
Regards.