arr.lib
LIB "arr.lib"; ring R = 0,(x,y,z),dp; arr A = mat2arr(random(20,5,4)); A; ==> _[1]=10x+y-2z-12 ==> _[2]=2x-16z-14 ==> _[3]=11y+16z-5 ==> _[4]=-16x-18y-5z+11 ==> _[5]=3x+8y+6 ==> arrPrintMatrix(A); ==> 10x, y, -2z, -12, ==> 2x, 0, -16z,-14, ==> 0, 11y, 16z, -5, ==> -16x,-18y,-5z, 11, ==> 3x, 8y, 0, 6