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MHT CET2016MathematicsMatrices

If Matrix A = 1 2 4 3 such that A X = I , then X = ________

Options

  1. A1 5 1 3 2 - 1
  2. B1 5 4 2 4 - 1
  3. C1 5 - 3 2 4 - 1
  4. D1 5 - 1 2 - 1 4

Correct answer

C. 1 5 - 3 2 4 - 1

Step-by-step solution

Given A X = I ∴ X = A - 1 = 1 A adj A ∴ X = - 1 5 3 - 2 - 4 1 ∴ X = 1 5 - 3 2 4 - 1

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