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MHT CET202210 Aug 2022Evening ShiftMathematicsMatricesActual

If A= [ array cc 2 & -3 4 & 1 array ] , then A+ adj A is

Options

  1. A[ array ll 3 & 0 0 & 3 array ]
  2. B[ array cc 1 & 3 -4 & 2 array ]
  3. C[ array ll 1 & 0 0 & 1 array ]
  4. D[ array cc 1 & -3 4 & 2 array ]

Correct answer

A. [ array ll 3 & 0 0 & 3 array ]

Step-by-step solution

A+ adj (A)= [ array cc 2 & -3 4 & 1 array ]+ [ array cc 1 & 3 -4 & 2 array ]= [ array ll 3 & 0 0 & 3 array ]

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