Expanding a function for large E using the Taylor Expansion technique

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SUMMARY

The discussion focuses on utilizing the Taylor expansion technique to simplify the expression \(\left(C + \frac{D}{E}\right)^{-1}\). The user identifies that for sufficiently large \(|E|\), the condition \(|D/(CE)| < 1\) allows for the application of a binomial expansion. This realization highlights the importance of recognizing foundational mathematical concepts, such as binomial expansion, in solving complex problems. The user expresses gratitude for the insights gained during the exploration of this technique.

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CricK0es
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Homework Statement
Obtain leading order behaviour of function
Relevant Equations
*See attached image*
I have been playing around with Taylor expansion to see if I can get anything out but nothing is jumping out at me. So any hints, suggestions and preferably explanations would be greatly appreciated as I’ve spent so so long messing around with it and I need to move on...

But as always, thank you
 

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We have <br /> \left(C + \frac{D}{E}\right)^{-1} = \frac{1}{C} \left(1 + \frac{D}{CE}\right)^{-1}. For sufficiently large |E| we have |D/(CE)| &lt; 1 so we can use a binomial expansion.
 
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Ahhhhhh Binomial! Okay. Always seems to be simple things that I don’t recognise that hold me up... pffh Nevermind.

Thank you!
 

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