|  |  D.3.1.18 multcol Procedure from librarymatrix.lib(see  matrix_lib).
 
Example:Usage:
multcol(A,c,p); A matrix, p poly, c positive integer
Return:
matrix, A being modified by multiplying column c by p
 |  | 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(multcol(A,2,xy));
==> 1,2xy,3,
==> 4,5xy,6,
==> 7,8xy,9 
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