[A(adj(A−1)+adj(B−1))−1⋅ B]−1⇒ B−1⋅(adj( A−1)+adj(B−1))⋅A−1⇒ B−1adj( A−1)A−1+B−1(adj( B−1))⋅A−1⇒ B−1 A−1I+B−1IA−1⇒∣ A∣ B−1+∣ B∣A−1⇒∣B∣∣A∣adjB+∣A∣∣B∣adj=∣ A∣∣B∣1(adjB+adjA)
If A, B, and ( adj ( A^-1 )+ adj ( B^-1 ) ) are non-singular matrices of same order, then the inverse of A ( adj ( A^-1 )+ adj ( B^-1 ) )^-1 ~B, is…
JEE Main 2025 — Mathematics Algebra
If A,B, and (adj(A−1)+adj(B−1)) are non-singular matrices of same order, then the inverse of A(adj(A−1)+adj(B−1))−1 B, is equal to
Held on 23 Jan 2025 · Verified 6 Jul 2026.
Options
- A
AB−1+A−1 B
- B
adj(B−1)+adj(A−1)
- C
∣A∣AB−1+∣B∣BA−1
- D
∣AB∣1(adj(B)+adj(A))
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