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The deacy ratio for a system having complex conjugate poles as

$(-\dfrac{1}{10} + j\dfrac{2}{15})$ and $(-\dfrac{1}{10} - j\dfrac{2}{15})$ is

  1. $7\times10^{-1}$
  2. $8\times10^{-2}$
  3. $9\times10^{-3}$
  4. $10\times10^{-4}$
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