Q. 354.6( 5 Votes )

If and find (3A2 – 2B + I).

Answer :

Given : and


Matrices A and B are of order 2 2.


To find : (3A2 – 2B + I).


Formula used :



Where cij = ai1b1j + ai2b2j + ai3b3j + ……………… + ainbnj


A2 is a matrix of order 2 x 2.


A =


A2 = =


A2 = =


3A2 = 3 × =


3A2 =


2B = 2 × =


2B =


I =


3A2 – 2B + I = + =


3A2 – 2B + I =


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