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Homework Statement
Why is it that continuous functions do not necessarily preserve cauchy sequences.
Homework Equations
Epsilon delta definition of continuity
Sequential Characterisation of continuity
The Attempt at a Solution
I can't see why the proof that uniformly continuous functions preserve cauchy sequences doesn't hold for 'normal' continuous functions.
In particular the example of f(x) = 1/x on (0,1)
I have worked through the examples
http://www.mathcs.org/analysis/reals/cont/answers/fcont3.html
and here
http://www.mathcs.org/analysis/reals/cont/answers/contuni4.html
where they address this issue directly, but I can't get my head around it.
I understand that if we have a cauchy sequence converging to 0, then f(xn) is going to diverge to infinity, but I still can't see what the problem is.
Any explanation you can offer would be appreciated.
Kind regards