Engineering
Mathematics
Introduction to Matrix
Inverse of a Matrix
Transpose and Adjoint of a Matrix
Question
If A is a singular matrix, then A (adj A) is a
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Solution
Given A is a singular matrix.
⇒ |A| = 0
A(adj A) = |A| l = 0 l = 0
∴ A(adj A) is a zero matrix.
Hence, option B.