1.

Let P=⎡⎢⎣3−1−22 0 α3−5 0⎤⎥⎦, where α∈R. Suppose Q=[qij] is a matrix such that PQ=kI, where k∈R, k≠0 and I the identity matrix of order 3. If q23=−k8 and det(Q)=k22, then:

Answer»

Let P=⎡⎢⎣3−1−22 0 α3−5 0⎤⎥⎦, where α∈R. Suppose Q=[qij] is a matrix such that PQ=kI, where k∈R, k≠0 and I the identity matrix of order 3. If q23=−k8 and det(Q)=k22, then:


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