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Since each element of A has a cofactor | C(/1, it is possible to form a matrix of cofactors by replacing each element au in (5.11) with its cofactor [ C:J\. Such a cofactor matrix, denoted by C = [|C;y|], must also be n X n. For our present purposes, however, the transpose/of C is of more interest. This transpose C' is commonly referred to as the adjoint of ^l and is symbolized by ndj A, Written out, the adjoint takes the form

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