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Miscellaneous·2021·Easy

The inverse of a matrix A is given by | –2 1 | | 3/2 –1/2 | What is A equal to?

The inverse of a matrix A is given by
| –2 1 |
| 3/2 –1/2 |

What is A equal to?

Options

  1. a.
    | 1 2 |
    | 3 4 |
  2. b.
    | 1 –2 |
    | –3 4 |
  3. c.
    | 1 2 |
    | 3 –4 |
    Correct answer
  4. d.
    | –1 2 |
    | 3 4 |

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