For which value of 'k' the points (7,−2),(5,1),(3,k) are collinear?
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If for the matrix A.A3=1, then A−1=
If A=⎣⎡123⎦⎤ then AA1.
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If A = ⎣⎡ 1 2 1−1111−31 ⎦⎤ and B = ⎣⎡ 4 −5 12022α3 ⎦⎤, If B is the inverse of A, then α is