Let matrix B be the adjoint of a square matrix A, l be the identity matrix of the same order as A. If k ( ne 0) is the determinant of the matrix A, then what is AB equal to ?
If A square matrix such that A^2 = A , then (l+A )^3 -7A is equal to :
If a square matrix A is such that "AA"^(T)=l=A^(T)A , then |A| is equal to
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If A is a square matrix of order 3 and I is an ldentity matrix of order 3 such that A^(3) - 2A^(2) - A + 2l =0, then A is equal to