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Re: what's wrong with this?!!


Am 22.12.2010 08:39, schrieb olfa:
> Hi mathematica community,
>
> this is the system to solve:
> Reduce[
> Element[{iP, N}, Integers]&&
> Not[(iP<  N)]&&
> Exists[{iPP}, (iPP<  N)&&  iP == iPP + 1],
> {iP}, Backsubstitution ->  True]
>
> the output is:
> (N | iP) =E2=88=88 Integers&&  N =E2=89=A4 iP<  1 + N
>
> but it should be:
>   iP==N
>
> so what's the problem what is missing to get the correct output?
>
> thank you very much.
>

0. commandment of Mathematica: You shall not make wrongful use of N

-- 

Roland Franzius


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