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Identify the singularity

  • Thread starter mkbh_10
  • Start date
  • #1
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Homework Statement



Identify the singularity of f(z)= 1-e^z/1+e^z at z= infinity


Homework Equations





The Attempt at a Solution



How shud i start
 

Answers and Replies

  • #2
CompuChip
Science Advisor
Homework Helper
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You can convert the singularity at infinity to one at zero by considering
[itex]g(z) = f(1 / z)[/itex]
Then apply the same strategy as here
 

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