Re: Simplifying an expression for computational, not aesthetic
- To: mathgroup at smc.vnet.net
- Subject: [mg98443] Re: Simplifying an expression for computational, not aesthetic
- From: "Nasser Abbasi" <nma at 12000.org>
- Date: Fri, 10 Apr 2009 04:51:02 -0400 (EDT)
- References: <firstname.lastname@example.org>
- Reply-to: "Nasser Abbasi" <nma at 12000.org>
"negatron" <lokieffect at gmail.com> wrote in message
news:grkgst$76u$1 at smc.vnet.net...
> My small grudge is that Simplify[x^2/y^2] does not result in (x/y)^2
> even though Mathematica is evidently aware the two are equivalent --
> An input of (x/y)^2 results in an output of x^2/y^2. This seems to be
> because of the brackets, which mathematica prefers to avoid.
> My question is, is there a way to specify that Simplify produces the
> SIMPLEST expression it has found, not just the simplest which can most
> conveniently be expressed. There's nothing in the documentation as far
> as I can tell.
The problem is what is the definition of SIMPLEST?
If you are interested in simplification based on "length" of expression, may
be you can use ComplexityFunction -> LeafCount
Simplify[theExpression, ComplexityFunction -> LeafCount]
But for the example at hand, using
Can keep it in the form you want. But then to use "r" later on, one must use
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