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Sticky Note
In matrices (AB)-¹ = ____?
  1. 1-AB
  2. B-¹.A-¹
  3. A-¹.B-¹
  4. None of these
Explanation

For matrices A and B, the inverse of the product AB is given by:

(AB)⁻¹ = B⁻¹A⁻¹

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