If A is a singular matrix, then A (adj A) is a. 1. scalar matrix … - Vidyadip

Question

If A is a singular matrix, then A (adj A) is a.

scalar matrix
zero matrix
identity matrix
orthogonal matrix

✓

Answer

zero matrix

Solution:
Given A is a singular matrix.
⇒ ∣A∣ = 0
A(adjA) = ∣A∣ I = 0I = O
∴ A(adjA) is a zero matrix.

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