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D.3.1.17 addcol

Procedure from library matrix.lib (see matrix_lib).

Usage:
addcol(A,c1,p,c2); A matrix, p poly, c1, c2 positive integers

Return:
matrix, A being modified by adding p times column c1 to column c2

Example:
 
LIB "matrix.lib";
ring r=32003,(x,y,z),lp;
matrix A[3][3]=1,2,3,4,5,6,7,8,9;
print(A);
==> 1,2,3,
==> 4,5,6,
==> 7,8,9 
print(addcol(A,1,xy,2));
==> 1,xy+2, 3,
==> 4,4xy+5,6,
==> 7,7xy+8,9