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09:31 <ebrosius> moins
09:36 <ebrosius> can someone help me with maxima with regard to matrix?
10:56 <ASau`> Good afternoon.
10:57 <ASau`> I don't know, but what is the question?
10:57 <ASau`> "Don't ask to ask, just ask."
11:33 <ebrosius> ASau, for example, i have a vector a=1x8 and a vector b=1x8 and i will build a matrix M=24x24 with these vectors. first row is [a,a,b]
11:33 <ebrosius> is this possible with maxima?
11:33 <ebrosius> if i make matrix([a,a,a]) i get a 1x3 matrix
11:36 <ebrosius> oh i see there are two nicks, ASau` (for highlight :)
11:37 <ASau`> Alright, I'm thinking. (Thanks for highlighting, I'm a bit busy now.
11:37 <ebrosius> k
11:42 <ASau`> append([1, 2, 3], [1, 2, 3]);
11:42 <ASau`> Use "matrix" to build from rows of "append" results.
11:58 <ebrosius> hm, dont really get this. i tried matrix( [append([a,b,a])] , [append([b,a,b])] , [ append([a,b,a])])
11:58 <ebrosius> looks like 3x3
11:59 <ebrosius> is there a command to see the dimension of a matrix?
12:01 <ebrosius> oh wait, i made a test with multiplication and got an dimension error
12:04 <ebrosius> h no, its an 3x3 :(
12:07 <ASau`> No.
12:07 <ASau`> append([1, 2, 3], [1, 2, 3]);
12:07 <ASau`> matrix(%, %, %);
12:08 <ebrosius> with 1,2,3 i can take a,b,a?
12:09 <ebrosius> or append([a],[b])?
12:10 <ASau`> a: [1, 2, 3];
12:10 <ASau`> append(a, a, a);
12:10 <ASau`> matrix(%, %, %);
12:10 <ASau`> Try running examples.
12:23 <ebrosius> it works with append([1,2,3],[1,2,3],[1,2,3]); but not with append(a,a,a)
12:24 <ebrosius> maybe im too stupid
12:24 <ebrosius> to
12:25 <ebrosius> every time i try it with the vectors i became a 3x3 matrix
12:25 <ASau`> Tried changing number of arguments?
12:25 <ASau`> Have you defined "a"?
12:26 <ebrosius> yes
12:26 <ASau`> pastebin your session.
12:26 <ebrosius> huh, its chaos here^^
12:27 <ASau`> Retry and pastebin then.
12:27 <ebrosius> k
12:29 <ASau`> I may become off-line for an hour or two.
12:29 <ASau`> Just take that into account.
12:34 <ebrosius> btw there is a mistake, i will build with the vectors a 3x24 matrix
12:35 <ebrosius> this will work too, or only with quadratic matrix
12:35 <ebrosius> ?
12:35 <ebrosius> i will try it and paste it later
12:50 <ebrosius> hah, i got my error ASau` :)
12:51 <ebrosius> i build the vectors with matrix([...]) so this append thing doesnt work
12:51 <ebrosius> now i make the vectors with a:[...] and it works now :)
12:51 <ebrosius> thank you very much for your help ASau` 
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