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Question

If d is the determinant of a square matrix A of order n, then the determinant of its adjoint is

  1. d to the power of n end exponent    
  2. d to the power of n minus 1 end exponent    
  3. d to the power of n plus 1 end exponent    
  4. d    

The correct answer is: d to the power of n minus 1 end exponent


    vertical line A d j A vertical line equals vertical line A vertical line to the power of n minus 1 end exponent equals d to the power of n minus 1 end exponent.

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