Question

Find the adjoin of the matrix `( 5 0 1 -2 )`.​

Answer 1

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Question

Find adjoint of matrix : 1 - 1 2 | 2 3 5 | - 2 0 1

Answer · 15 votes

M11 = 3 M12 M13 = 6 M21 = - 1 M22 = 5 M23 - 2 M31 = - 11 M32 = 1 M33 = 5 C11 = 3 C12 = - 12 C13 = 6 C21 = 1 C22 = 5 C23 = 2 C31 = - 11 C32 = - 1 C33 = 5 co factor matrix 3 - 12 6 | 1 5 2 | - 11 - 1 5 Adj A = Transpose of co - factor matrix 3 - 12 6 | 1 5 2 | - 1