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CGP EDU Academic Team
Published on: August 12, 2026
Inverse of diagonal matrix (if it exists) is a
Text Solution
Verified by ExpertsThe correct answer is:
B
Let 
As A is invertible, therefore 
⇒ ⇒ 
⇒ ⇒ 
for i = 1, 2, 3…..n
Here, cofactor of each non diagonal entry is 0 and cofactor of 
which is a diagonal matrix
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