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