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The Maxima on-line user's manual

Algebra Calculator

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Col

Function: col (<M>, <i>) Returns the <i>th column of the matrix <M>. The return value is a matrix.

a:matrix([1,1,2],[2,3,5]);
b:a;
n:length( a );
b[1];
for i:1 step 1 thru n do for j:i step 1 thru n do block([],b[i], b[i]:b[i]/b[i,i], if j < n then b[j+1]: b[j+1]-b[i]*b[j+1,i]);
b;
echelon(a);
x:col(b,length(a)+1);

There are also some inexact matches for col. Try ?? col to see them.

(%o1)                                true
(%i2) 

Related Examples

col-cos-matrix-sin-solve

T0:matrix([1,0,0,100]...

R11:matrix([cos(pi/2)...

R12:matrix([cos(-T1),...

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col-genmatrix-min-numer-permanent-random-row-sort-sqrt-transpose

norm(x):=sqrt(x.x);

v:[1,1,1];

a[i,j]:=random(100);

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col-matrix-row

a:matrix([1,2,3],[2,3...

b:matrix([2,3,1],[2,3...

col(a,3);

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col-error-eval-load-matrix

load(lsquares);

D: matrix( [3.2, 12,...

ti:22;

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col-matrix-rank-triangularize

A:matrix([h,a,b,c,d],...

B:triangularize(A);

rank(B);

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col-matrix

L: matrix([1, 2], [3,...

col(L, 1);

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col-display-do-row

for n : 2 thru 6 do( ...

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