Operations on Matrices

If A and B are two matrices of the same order, then A and B are said to be Conformable or Compatible for addition. If A and B are two matrices of the same order, then they are said to be conformable for subtraction. If A is any matrix and K is any constant or a scalar, then the matrix obtained by multiplying each element of A by K is denoted by KA and it is called the scalar multiple of A by K.