12th Class Mathematics Determinants

  • question_answer 38)
    Find the adjoint of the matrix  

    Answer:

    Let         we have A11 = (?1)1+1.4 = 4       A12 = (?1)1+2 .3 = ?3       A21 = (?1)2+1 . 2 = ?2       A22 = (?1)2+2 . 1 = 1              


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