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COMEDK2017MathematicsDeterminants

If A= [ array ccc & - & 0 & & 0 0 & 0 & 1 array ] , the cofactor of a₃₂ are

Options

  1. A1,-1
  2. B0,1
  3. C-1,0
  4. D0,0

Correct answer

D. 0,0

Step-by-step solution

We have, A= [ array ccc & - & 0 & & 0 0 & 0 & 1 array ] Minor of a₃₂= | array cc & 0 & 0 array |=0-0=0 and cofactor of a₃₂=- Minor of a₃₂=-0=0

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