Bladen1203 Bladen1203
  • 24-04-2024
  • Mathematics
Answered

Let A = 1 1 2 1 0 1 2 1 2 . Which of the following statements are correct?
1) A is not invertible.
2) The first row of A-1 is (-1, 0, 1).
3) The determinant of A is 0.
4) The rank of A is 2.



Answer :

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