. Without finding the entire inverse matrix, find only the (2,1)-entry of A-1 using the 1...

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. Without finding the entire inverse matrix, find only the (2,1)-entry of A-1 using the 1 2 - 1 1 [Hint: adj(A)=CT, where C is 0 4 7 adjoint formula for the inverse if A = 3 the matrix of cofactors of A.] . Without finding the entire inverse matrix, find only the (2,1)-entry of A-1 using the 1 2 - 1 1 [Hint: adj(A)=CT, where C is 0 4 7 adjoint formula for the inverse if A = 3 the matrix of cofactors of A.]

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To find the 2 1entry of the inverse of matrix A using the adjoint formula we first need to find the ... View the full answer