If A is singular then A(adjA) = ? A. A unit matrix B.A null matrix – InterviewSolution

1.

If A is singular then A(adjA) = ? A. A unit matrix B.A null matrix C.A symmetric matrix D. None of these

Answer»

A(adjA)= A(│A│ x A^-1)

Since determinant of singular matrix is always 0

A(adjA) = 0

So, it is a null matrix.

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