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Math Forum » Discussions » sci.math.* » sci.math.symbolic.independent

Topic: Another question about Factor
Replies: 13   Last Post: Nov 23, 2012 6:11 PM

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Nasser Abbasi

Posts: 5,063
Registered: 2/7/05
Re: Another question about Factor
Posted: Nov 22, 2012 7:23 PM
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On 11/22/2012 6:11 PM, Tang Laoya wrote:

> The function HornerForm can factor part of the express, but still not the most compressed:
>
> bb1 = -Det[{{1, 1, 1}, {y2, y3, y4}, {z2, z3, z4}}];
> bb = HornerForm[bb1]
>
> The output is
> -y4 z2 + y4 z3 + y3 (z2 - z4) + y2 (-z3 + z4)
>
> appearently it can be factored furthermore:
> y4 (z3-z2) + y3 (z2 - z4) + y2 (-z3 + z4)
>

You'll get the second form, one with less multiplications,
if you also give it also a list of the variables as the example
I just posted. see ?HornerForm for more details

--Nasser

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