- #1
Karthiksrao
- 68
- 0
Hello,
I am trying to understand how to get the residue as given by wolfram :
http://www.wolframalpha.com/input/?i=residue+of+e^{Sqrt[x^2+++1]}/(x^2+++1)^2
The issue I am facing is - since it is a second order pole, when I try to different e^{\sqrt{x^+1}} I get a \sqrt{x^+1} in the denominator. And hence I cannot substitute x = i to get the residue. How do I deal with a pole which comes about on differentiating?
Thanks!
I am trying to understand how to get the residue as given by wolfram :
http://www.wolframalpha.com/input/?i=residue+of+e^{Sqrt[x^2+++1]}/(x^2+++1)^2
The issue I am facing is - since it is a second order pole, when I try to different e^{\sqrt{x^+1}} I get a \sqrt{x^+1} in the denominator. And hence I cannot substitute x = i to get the residue. How do I deal with a pole which comes about on differentiating?
Thanks!