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જો $y=\frac{e^{2 x}+e^{-2 x}}{e^{2 x}-e^{-2 x}}$, તો $\frac{d y}{d x}=$........ .

• ✓
  $\frac{-8}{\left(\mathrm{e}^{2 \mathrm{x}}-\mathrm{e}^{-2 \mathrm{x}}\right)^2}$
• B
  $\frac{8}{\left(e^{2 x}-e^{-2 x}\right)^2}$
• C
  $\frac{-4}{\left(e^{2 x}-e^{-2 x}\right)^2}$
• D
  $\frac{4}{\left(e^{2 x}-e^{-2 x}\right)^2}$