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Groups > comp.lang.python > #33258
| From | Dennis Lee Bieber <wlfraed@ix.netcom.com> |
|---|---|
| Subject | Re: Division matrix |
| Date | 2012-11-13 13:48 -0500 |
| Organization | > Bestiaria Support Staff < |
| References | <98b451e1-5cd5-46e9-8be4-59dcc835700b@googlegroups.com> <CAN1F8qUScDpn2Dz_cJreBAidy8sxZSx8+SzgWs1x809s56EnVg@mail.gmail.com> <CAH+9R7AaU_Ke2tPe1T-0Be2JhTW+Eg_gX59s=4KOVDP7Yc95Hg@mail.gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3641.1352832471.27098.python-list@python.org> (permalink) |
On Tue, 13 Nov 2012 10:19:43 -0200, Cleuson Alves <cleuson.o@gmail.com>
declaimed the following in gmane.comp.python.general:
> Thanks, I'm starting to plan now, so I'm still confused with the production
> code, but what I need is to divide array 2x2 or 3x3.
> I still can not!
Divide it by what? A scalar... Another square matrix of the same
size... Or a square matrix of a different size (is that even
possible?)...
Based
http://en.wikipedia.org/wiki/Division_%28mathematics%29#Division_of_matrices
upon, I can understand where the need for the inverse comes from -- and
multiplication by the inverse gives the "division". Next up,
http://en.wikipedia.org/wiki/Invertible_matrix#Inversion_of_2.C3.972_matrices
gives direct formulations for 2x2 and 3x3 matrices.
--
Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
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Division matrix Cleuson Alves <cleuson.o@gmail.com> - 2012-11-12 17:00 -0800 Re: Division matrix Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-12 18:25 -0700 Re: Division matrix Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-11-13 13:48 -0500 Re: Division matrix "R. Michael Weylandt" <michael.weylandt@gmail.com> - 2012-11-13 22:14 +0000 Re: Division matrix wxjmfauth@gmail.com - 2012-11-14 01:04 -0800
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