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MHT CET2019Morning ShiftMathematicsDeterminantsActual

If A and B are square matrices of order 3 such that A = 2 , B = 4 , then A a d j B = …

Options

  1. A16
  2. B8
  3. C64
  4. D32

Correct answer

D. 32

Step-by-step solution

We have, A and B are square matrices of order 3 such that A = 2 , B = 4 Now, A a d j B = A a d j B ∵ A B = A B A B 3 - 1 = A B 2 = 2 4 2 = 32

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