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Topic: Is it me or is it Wolfram?
Replies: 16   Last Post: May 13, 2013 4:51 PM

 Messages: [ Previous | Next ]
 JT Posts: 1,448 Registered: 4/7/12
Re: Is it me or is it Wolfram?
Posted: May 10, 2013 10:09 AM

On 10 Maj, 16:06, JT <jonas.thornv...@gmail.com> wrote:
> On 9 Maj, 20:17, JT <jonas.thornv...@gmail.com> wrote:
>
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> > On 9 Maj, 20:14, JT <jonas.thornv...@gmail.com> wrote:
>
> > > On 9 Maj, 20:01, JT <jonas.thornv...@gmail.com> wrote:
>
> > > >http://www.wolframalpha.com/input/?i=0.499999999999999999999999999999...
>
> > > > n = -1.
> > > > 0.49999999999999999999999999999999999999999 = (n/2-1)/n

>
> > > >http://www.wolframalpha.com/input/?i=%3D%2810000000000000000000000000...
>
> > > > 0.49999999999999999999999999999999999999999=(100000000000000000000000000000000000000000/2-1)/
> > > > 100000000000000000000000000000000000000000

>
> > > > I do not understand to, can please someone explain why and how wolfram
> > > > get -1 for the upper calculation, it is obvious using the one below
> > > > what the solution is?

>
> > > > And if there was two solutions should not Wolfram give them both? What
> > > > is going on here, i am total newb to math calculators so tell me what
> > > > is going on?

>
> > > It is apparently adding the 11th decimal digit something goes terribly
> > > wrong with wolfram alpha because it works perfectly well for.
> > > 0.4999999999 = (n/2-1)/nhttp://www.wolframalpha.com/input/?i=0.4999999999+%3D+%28n%2F2-1%29%2Fn

>
> > Is it an overflow?
>
> Really noone knows why this happen? This is not quantum mechanic, i
> would say it is an overflow in an operation am i right? But where does
> -1 come from?

Just for the record i thought that computer arithmetic came further
then this in progress, i could certainly avoided it making the
primitives for the operations in a programming language. And Wolfram
is not exactly beginners in the bransch, so one has to wonder what is
going on.

Date Subject Author
5/9/13 JT
5/9/13 JT
5/9/13 JT
5/10/13 JT
5/10/13 JT
5/10/13 RGVickson@shaw.ca
5/10/13 JT
5/10/13 JT
5/10/13 JT
5/10/13 LudovicoVan
5/10/13 JT
5/10/13 LudovicoVan
5/10/13 JT
5/10/13 JT
5/12/13 JT
5/13/13 JT
5/13/13 Brian Q. Hutchings