Find the matrix A if [(9, -1, 4)(-2, 1, 3)] = A + [(1, 2, -1)(0, 4, 9)]
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Solution :
Given ,
A + [ ( 1 2 -1 ) ( 0 4 9 ) ] = [(9 -1 4)( -2 1 3)]
=> A = [(9 -1 4)( -2 1 3)]-[(1 2 -1)( 0 4 9)]
=> A = [(9-1 -1-2 4+1)( -2-0 1-4 3-9)]
= [( 8 -3 5 )( -2 -3 -6 )]
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Given ,
A + [ ( 1 2 -1 ) ( 0 4 9 ) ] = [(9 -1 4)( -2 1 3)]
=> A = [(9 -1 4)( -2 1 3)]-[(1 2 -1)( 0 4 9)]
=> A = [(9-1 -1-2 4+1)( -2-0 1-4 3-9)]
= [( 8 -3 5 )( -2 -3 -6 )]
•••••
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