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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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Tang Laoya

Posts: 23
Registered: 11/21/12
Re: Another question about Factor
Posted: Nov 22, 2012 7:11 PM
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Dear Nasser,

Thank you very much for your quick even when you are so busy.

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)


Thanks,
Tang Laoya


On Thursday, November 22, 2012 11:19:52 PM UTC+8, Tang Laoya wrote:
> Dear all,
>
>
>
> I need to factor a polynomial express, however, it doesn't work, could anyone help me to take a look at it?
>
>
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> Thanks,
>
> Tang Laoya
>
>
>
>
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> The code:
>
>
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> vv = Det[{{1, 1, 1, 1}, {x1, x2, x3, x4}, {y1, y2, y3, y4}, {z1, z2,
>
> z3, z4}}];
>
> vv = Factor[vv]

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