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\(\text { Let } A \text { and } B \text { are non-singular commutative matrices. Then } A\left[\left(\operatorname{adj} …

Q1

\(\text { Let } A \text { and } B \text { are non-singular commutative matrices. Then } A\left[\left(\operatorname{adj} A^{-1}\right)\left(a d j\left(B^{-1}\right)\right)\right]^{-1} B \text { is equal to }\)

a

\(|A||B| I_n\)

b

\(\frac{I_n }{|A||B|}\)

c

\(\frac{I_n }{|A|}\)

d

\(\frac{I_n}{|B|}\)

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