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KCET2025MathematicsMatrices

If A and B are two matrices such that A B is an identity matrix and the order of matrix B is 3 4 , then the order of matrix A is

Options

  1. A3 4
  2. B3 3
  3. C4 3
  4. D4 4

Correct answer

C. 4 3

Step-by-step solution

aligned & AB = I & ~A _ 4 3 ~B _ 3 4 I _ 4 4 aligned The order of matrix A is 4 3

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