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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-copy-gamma-ident-length-matrix

a1 : matrix([3,-4, 5,...

a : copy(a1);

n : length(a);

Calculate

col-length-matrix-matrixp-op-part

m: matrix();

matrixp(m);

m: matrix([],[]);

Calculate

col-echelon-length-matrix

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

b:a;

n:length( a );

Calculate

col-error-load-matrix

load(lsquares);

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

ti:22;

Calculate

col-echelon-matrix-rowop

m:matrix([1,1,3,1,1,0...

m1:echelon(m);

m2:rowop(m1,1,3,1);

Calculate

col-cos-matrix-pi-ratsimp-sin-tex-trigreduce

A01:matrix([cos(th1),...

A12:matrix([cos(th2-%...

A23:matrix([cos(th3),...

Calculate