Re: Assumptions does not work in Eliminate?
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- Subject: [mg127915] Re: Assumptions does not work in Eliminate?
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Fri, 31 Aug 2012 04:01:46 -0400 (EDT)
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?? $Assumptions
$Assumptions is the default setting for the Assumptions option used in
such functions as Simplify, Refine, and Integrate. >>
$Assumptions=True
Options[Eliminate, Assumptions]
Options::optnf: Assumptions is not a known option for Eliminate. >>
{}
Consequently,
$Assumptions = {b > 0};
Eliminate[{a/b == c, a == d}, a] // Simplify
b c == d
Bob Hanlon
On Thu, Aug 30, 2012 at 4:07 AM, <"Andreas Talmon l'Arm=E9e"@smc.vnet.net> wrote:
> Hello,
>
> I am trying to use the $Assumptions command with the Eliminate in the
> following form:
>
>
> $Assumptions = {b > 0}
>
> Eliminate[{a/b == c, a == d}, a]
>
>
>
> The answer I get is:
>
> d == b c && b != 0
>
>
>
> The b!=0 is sensless for me because I stated b>0 above.
> What am I doing wrong?
>
> Thanks, Andreas
>
- References:
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- How to create links or bookmarks to jump to sections inside a notebook