Q. 135.0( 4 Votes )

If then find (-A2 + 6A).

Answer :

Given :

Matrix A is of order 2 2.

To find : -A2 + 6A

Formula used :

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

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 = =

6A = 6 × =

6A =

-A2 + 6A = + = =

-A2 + 6A =

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