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GATE ECE 2017 Set 2 | Question: 4

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The residues of a function $$f(z)=\frac1{(z-4)(z+1)^3 }$$
are

  1. $\frac{-1}{27}$  and  $\frac{-1}{125} \\$
  2. $\frac{1}{125}$ and $\frac{-1}{125} \\$
  3. $\frac{-1}{27}$  and $\frac{1}{5} \\$
  4. $\frac{1}{125}$and $\frac{-1}{5}$

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