       Re: Eliminating common factors?

• To: mathgroup at smc.vnet.net
• Subject: [mg93338] Re: Eliminating common factors?
• From: Steven Siew <stevensiew2 at gmail.com>
• Date: Tue, 4 Nov 2008 06:18:19 -0500 (EST)
• References: <gemjk2$4v5$1@smc.vnet.net>

In:=  eq = 4*(a^4 + b^4 c)
In:=  neweq = Part[ Simplify[eq == 0],1 ]
Out:= a^4 + b^4 c

Problem solved.

On Nov 3, 9:26 pm, AES <sieg... at stanford.edu> wrote:
> I have a simple, totally algebraic symbolic calculation that displays
> its output in the form (rewritten here using TeX notation)
>
>       4 ( {a \over 4 } + { b \over 4 c } )
>
> where a, b and c are fairly simple products of purely algebraic
> quantities; \over is the TeX notation for a display fraction; and the
> curly brackets are just for TeX purposes and are not there in the actual
> output.
>
> Is there any Assumption for Simplify, or any other _simple_ way, to get
> rid of those (utterly!!!) superfluous 4's?
>
> [I suppose the real question is, why doesn't M cancel 'em the hell out
> in the first place?!?!]



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