Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: If you claim 0.999... is a rational number, then you must find
p/q such that 0.999... = p/q. 12/26/2017

Replies: 40   Last Post: Jan 4, 2018 7:37 AM

 Messages: [ Previous | Next ]
 zelos.malum@gmail.com Posts: 1,176 Registered: 9/18/17
Re: If you claim 0.999... is a rational number, then you must find
p/q such that 0.999... = p/q. 12/26/2017

Posted: Dec 31, 2017 5:00 AM

Den söndag 31 december 2017 kl. 06:21:49 UTC+1 skrev 7777777:
> lauantai 30. joulukuuta 2017 10.41.42 UTC+2 Zelos Malum kirjoitti:
> > >It can be "proved" by refusing logics only.
> >
> > Not at all, it is from logic we deduce it.
> >

> > >Every sober mind with minimum intellectual capacities knows and can prove that your claim is wrong. Simply assume logic:
> >
> > Give it a go.
> >

> > >For all n in |N: 0.999...9_n =/= 1. This is true for every n.
> >
> > Correct, every finite number of 9's makes it an inequality.
> >

> > >The infinite sequence does not contain more than every index.
> >
> > That is exactly what it does, the infinite 9s is more than any finite number of 9's

>
> you end up at a dead end

and you should go back to school and learn mathematis.