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Question

The ad joint of open square brackets table row 1 1 1 row 1 2 cell negative 3 end cell row 2 cell negative 1 end cell 3 end table close square bracketsis

  1. open square brackets table row 3 cell negative 9 end cell cell negative 5 end cell row cell negative 4 end cell 1 3 row cell negative 5 end cell 4 1 end table close square brackets    
  2. open square brackets table row 3 cell negative 4 end cell cell negative 5 end cell row cell negative 9 end cell 1 4 row cell negative 5 end cell 3 1 end table close square brackets    
  3. open square brackets table row cell negative 3 end cell 4 5 row 9 cell negative 1 end cell cell negative 4 end cell row 5 cell negative 3 end cell cell negative 1 end cell end table close square brackets    
  4. None of these    

The correct answer is: open square brackets table row 3 cell negative 4 end cell cell negative 5 end cell row cell negative 9 end cell 1 4 row cell negative 5 end cell 3 1 end table close square brackets


    Let, A equals open square brackets table row 1 1 1 row 1 2 cell negative 3 end cell row 2 cell negative 1 end cell 3 end table close square brackets; a d j left parenthesis A right parenthesis equals open square brackets table row cell A subscript 11 end subscript end cell cell A subscript 21 end subscript end cell cell A subscript 31 end subscript end cell row cell A subscript 12 end subscript end cell cell A subscript 22 end subscript end cell cell A subscript 32 end subscript end cell row cell A subscript 13 end subscript end cell cell A subscript 23 end subscript end cell cell A subscript 33 end subscript end cell end table close square brackets
    rightwards double arrow A subscript 11 end subscript equals 3 comma A subscript 12 end subscript equals negative 9 comma A subscript 13 end subscript equals negative 5
    A subscript 21 end subscript equals negative 4 comma A subscript 22 end subscript equals 1 comma A subscript 23 end subscript equals 3
    A subscript 31 end subscript equals negative 5 comma A subscript 32 end subscript equals 4 comma A subscript 33 end subscript equals 1
    rightwards double arrow A d j left parenthesis A right parenthesis equals open square brackets table row 3 cell negative 4 end cell cell negative 5 end cell row cell negative 9 end cell 1 4 row cell negative 5 end cell 3 1 end table close square brackets.

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