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Manipal MET2011MathematicsMatrices

Which of the following statements is/are correct? I. Adjoint of a unit matrix is a unit matrix. II. A( adj A)=( adi A) A=|A| I III. Adjoint of a symmetric matrix is symmetric. IV. Adjoint of a diagonal matrix is a diagonal matrix.

Options

  1. AI
  2. BII
  3. CI or II
  4. DAll statements are correct

Correct answer

D. All statements are correct

Step-by-step solution

All statements are correct.

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