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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-echelon-matrix-rowop

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

m1:echelon(m);

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

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col-define-do-eigenvectors-exp-ident-matrix-nullity-nullspace

A:matrix([6, -6, 5], ...

b(t):=matrix([0],[0]...

X(t) := matrix([x1(t...

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col-display-do-row

for n : 2 thru 6 do( ...

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col-matrix-rank-triangularize

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

B:triangularize(A);

rank(B);

Calculate

col-echelon-length-matrix

a:matrix([1,2,3,6],[2...

b:a;

n:length( a );

Calculate

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

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

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

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

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col-length-matrix-rest

a : matrix([−3, 4, 5,...

n : length(a);

t : matrix([1/a[1, 1]]);

Calculate