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MHT CET2010MathematicsMatrices

Let A= [ array cc & - - & - array ] , then the inverse of A is

Options

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

Correct answer

A. [ array cc & - - & - array ]

Step-by-step solution

array l |A|= | array cc & - - & - array |=-1 adj (A)= [ array cc - & & array ] A⁻¹= | array cc & - - & - array |=A array

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