Q. 233.8( 5 Votes )

Find the matrix A

Answer :

Given :


To find : matrix A


Formula used :



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


IF XA = B, then A = X-1B


. A =


A =


To find


Determinant of given matrix = = 5(3) – (-7)(-2) = 15 – 14 = 1


Adjoint of matrix =


= × =


=


A = =


A = = =


A =


A =


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