Q. 114.0( 5 Votes )

If show that A2 = I.

Answer :

Given :


Matrix A is of order 3 3


To show : A2 = I


Formula used : 3x3-matrix-formula.png


If A is a matrix of order a b and B is a matrix of order c d ,then matrix AB exists and is of order a d ,if and only if b = c


A2 =


A2 =


A2 = =


A2 = I =


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