NCERT Exercise 4.3 Q1 - Determinants

Question: Write minors and cofactors of (i) |[[2,-4],[0,3]]| and (ii) |[[a,c],[b,d]]|.

Answer: (i) M11=3, M12=0, M21=-4, M22=2; A11=3, A12=0, A21=4, A22=2. (ii) M11=d, M12=b, M21=c, M22=a; A11=d, A12=-b, A21=-c, A22=a.

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