4.4 Multiplication of Matrix by a Number

4.4 Multiplication of a Matrix by a Number
When matrix is multiplied by a number, every element in the matrix is multiplied by the number.

Example:
Given that  A=(2456) , find each of the following.
(a) 3A
(b) -2A 

Solution:
(a)3A=3(2456)=(3×(2)3×43×53×(6))=(6121518)


(b) 2A=2(2456)=(2×(2)2×42×52×(6))=(481012)