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Miscellaneous·2016·Easy

Consider the following in respect of the matrix A = (-1 1; 1 1) 1. A² = -A 2. A³ = 4A Which of the above is/are correct?

Consider the following in respect of the matrix A = (-1 1; 1 1)

1. A² = -A

2. A³ = 4A


Which of the above is/are correct?

Options

  1. a.

    1 only

  2. b.

    2 only

    Correct answer
  3. c.

    Both 1 and 2

  4. d.

    Neither 1 nor 2

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