Is There an Analytical Solution for This Tough Definite Integral?

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Discussion Overview

The discussion centers around the evaluation of a definite integral involving an exponential function and a square root in the denominator. Participants explore whether an analytical solution exists for the integral from 0 to 1 of the function exp(1/(x(1-x)))/sqrt(x(1-x)), and later consider a modified version with a negative exponent.

Discussion Character

  • Exploratory, Debate/contested, Mathematical reasoning

Main Points Raised

  • One participant presents a definite integral and shares a numerical approximation of about 1.4695, questioning the existence of an analytical solution.
  • Another participant cites WolframAlpha, claiming that the original integral does not converge.
  • A further contribution argues that the integral diverges near zero, providing reasoning based on the behavior of the integrand as x approaches zero.
  • A later post corrects the original integral by introducing a negative exponent, suggesting that this modified integral should converge.

Areas of Agreement / Disagreement

Participants express disagreement regarding the convergence of the original integral, with some asserting it does not converge while others suggest that the modified integral with the negative exponent should converge.

Contextual Notes

The discussion includes assumptions about the behavior of the integrand near the boundaries of integration and relies on external computational tools for convergence claims. The implications of these assumptions on the overall evaluation of the integral remain unresolved.

Irid
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Hello,
I would like to evaluate the following definite integral

[itex]\int_0^1 \frac{exp(1/(x(1-x)))}{\sqrt{x(1-x)}}[/itex]

Numerically I get the result of about 1.4695 and it appears to converge nicely in the domain of interest (0;1). However, I'm wondering whether some kind of analytical integral exists as well... couldn't find anything myself :(
 
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Oops, sorry, I forgot the minus sign:

[itex]\int_0^1 \frac{exp(-1/(x(1-x)))}{\sqrt{x(1-x)}}[/itex]

should converge now :)
 

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