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NDA 2010
Exam
NDA
Year
2010
Subject
Mathematics
Chapter
Matrices

NDA 2010 · Mathematics · Matrices

If A= [ array cc 0 & 1 -1 & 0 array ], B= [ array cc i & 0 0 & -i...

If A=A=\left[01−10\begin{array}{cc} 0 & 1 \\ -1 & 0 \end{array}\right], B=\left[i00−i\begin{array}{cc} i & 0 \\ 0 & -i \end{array}\right], C=\left[0−i−i0\begin{array}{cc} 0 & -i \\ -i & 0 \end{array}\right] then which one of the following is not correct?

Options

  1. AA2=B2A^2=B^2
  2. BB2=C2B^2=C^2
  3. CAB=CA B=C
  4. DAB=BAA B=B A

Correct answer

D. AB=BAA B=B A

Step-by-step solution

The correct answer is option (D).
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