Discussion:  Calculus Made Easy App tool 
Topic:  Try to solve this. 
Related Item:  http://mathforum.org/mathtools/tool/3522/ 
Post a new topic to the Calculus Made Easy App tool Discussion discussion 

Subject:  RE: Try to solve this. 
Author:  Betty14 
Date:  Aug 20 2004 
> 1x...if x is irrational.
Well, no 2 is easy.
If x is rational, then fof(x) = f(x) = x.
if x is irrational, then fof(x) = f(1x) = 1 (1x) = x.
Thus, fof(x) = x no matter x is or is not rational.
Betty
 
Post a new topic to the Calculus Made Easy App tool Discussion discussion  