Mastering Matrices
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Questions and Answers

Which of the following is the correct formula for finding the determinant of a 2x2 matrix?

  • ab - cd
  • ad - bc (correct)
  • ac - bd
  • bd - ac

    • What is the result of multiplying a matrix by its inverse?

  • Matrix becomes singular
  • Identity matrix (correct)
  • All elements become negative
  • Zero matrix

    • What is the rank of a matrix?

  • The maximum number of linearly independent rows or columns (correct)
  • The number of rows multiplied by the number of columns
  • The determinant of the matrix
  • The sum of all elements in the matrix

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