Integration through approximation

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Discussion Overview

The discussion centers around the approximation of an integral that lacks an analytical solution. Participants explore methods to approximate the integral, considering the roles of the parameters involved and the limits of integration.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Mathematical reasoning

Main Points Raised

  • One participant states that there is no analytical solution for the integral \(\int_{k}^{K} \frac{exp(-log^2 (x))}{x(x-A)}dx\) and seeks methods for approximation.
  • Another participant inquires about the values of \(k\), \(K\), and \(A\), suggesting that knowing these parameters could simplify the approximation process.
  • A different participant highlights the importance of the critical points \(x = 0\) and \(x = A\), noting that if either lies within the integration limits \([k,K]\), the integral must be split at that point.
  • A participant assumes \(x > A > 0\) as a condition for their analysis.
  • The same participant expresses caution regarding the relationship between the assumption \(x > A > 0\) and the limits of integration \([k,K]\).

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best approach to approximate the integral, and multiple views regarding the significance of the parameters and critical points remain present.

Contextual Notes

The discussion includes assumptions about the parameters and their relationships, which may affect the validity of proposed approaches. The impact of critical points on the integral's evaluation is also noted but remains unresolved.

Matheco
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There is no analytical solution of the integral below. Can we approxiamate the analytical solution?

[itex]\int_{k}^{K} \frac{exp(-log^2 (x))}{x(x-A)}dx[/itex]
 
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Is anything known about k, K, A?
If they are given, it is easy - if not, some knowledge about them would still help.
 
x = 0 and x = A have critical roles. If either is inside [k,K], you have to break the integral at that point before proceeding.
 
Thanks for your replies. I am assuming x>A>0.
 
Matheco said:
Thanks for your replies. I am assuming x>A>0.

My caution involves the relationship to the limits of integration [k,K].
 

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