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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-length-matrix-rest-row-transpose

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

n : length(a);

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

Calculate

col-error-load-matrix-rhs

load(lsquares);

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

ti:20;

Calculate

col-length-matrix-op

m:matrix([]);

op(m);

length(m);

Calculate

col-exp-lhs-matrix-solve

UpW: matrix( [ UpaW ]...

IpW: matrix( [ IpaW ]...

UsW: matrix( [ UsaW ]...

Calculate

col-error-eval-float-load-matrix

load(lsquares);

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

ti:22;

Calculate

col-error-load-matrix-rhs

load(lsquares);

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

ti:20;

Calculate

col-echelon-length-matrix

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

a:matrix([1,2,-8,14],...

b:a;

Calculate