MCQ
$\frac{d}{d x}\left\{\left|\begin{array}{cc}x & x \\ 2 & x\end{array}\right|\right\}=$
  • A
    $x^2-2 x$
  • $2 x-2$
  • C
    $2 x+2$
  • D
    $x-2$

Answer

Correct option: B.
$2 x-2$
B

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