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

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JT

Posts: 1,150
Registered: 4/7/12
Re: Is it me or is it Wolfram?
Posted: May 9, 2013 2:14 PM
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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)/n
http://www.wolframalpha.com/input/?i=0.4999999999+%3D+%28n%2F2-1%29%2Fn



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