||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
A = Matrix([3,0,4])
B = Matrix([-1,8,2])
C = Matrix([[9],[5],[7]])
D = Matrix([[2],[-2],[6]])

print "(i) 3(C-4D)"
print 
print 3*(C-4*D)
print 
print "(ii) 3*C-12*D"
print 3*C-12*D
}}}

/* code_ends */

 * '''Solution by''': 
   * <Sunny Mehrotra>, <student>, <IIT Roorkee>
   * <Sharat s.i>, <Student>, <IIT Roorkee>