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MathGroup Archive 2005

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Re: Simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58687] Re: Simplify
  • From: "Scout" <not at nothing.net>
  • Date: Thu, 14 Jul 2005 02:49:15 -0400 (EDT)
  • References: <db2g9i$djm$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi.
The fact that Mathematica doesn't simplify
the expression with 1 is due to the operand
of the Sqrt[] function that must be POSITIVE ( > 0)!
If you try with that assumption the Simplify
command carries out its work.

    ~Scout~


"paulvonhippel at yahoo" <paulvonhippel at yahoo.com> ha scritto nel messaggio 
news:db2g9i$djm$1 at smc.vnet.net...
> I'm having some trouble getting an expression to simplify in an obvious
> way. (There seems to be a long tradition of users posting to this group
> with similar troubles.)
>
> The expression is
>
> poly = p (p - 1) b^2 + s^2
> prod = Sqrt [poly] Sqrt[1/poly]
> Simplify[prod, {0 < p < 1, s > 0, bϵReals}]
>
> which should return one, I think, but doesn't.
>
> I'd be grateful for suggestions.
>
> Thanks!
> Paul
> 


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