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Consider the matrix A = 3(a) Compute the adjoint matrix adj(A).(b) Compute the determinant det(A)...

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Consider the matrix A = 3(a) Compute the adjoint matrix adj(A).(b) Compute the determinant det(A) and find the inverse matrix A-,Consider the matrix B= 2 1(a) Use the cofactor exapansion to evaluate the determinant det(B) with using the second column.(b) Use the cofactor exapansion to evaluate the determinant det(B) with using the third row.

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