Surabhi posted an Question
July 03, 2020 • 23:20 pm 30 points
  • IIT JAM
  • Mathematics (MA)

1.61. please give explanation for this

1.61. Let A be a real 3 x4 matrix of rank 2. Then the rank of A'A, where A' denotes the eranspose A, is: ) exactly 2 (ii) exactly 3 (ii) exactly 4 (iv) at most 2 but not necessarily 2.

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    Deepak singh 1

    rank(A) = rank (AtA) , so rank (AtA) is less than or equal to 2 . so option 4 is correct.

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