How can the integral of x^p exp(-tx) be solved for p=3/4, 5/4, and 7/4?

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SUMMARY

The integral of x^p exp(-tx) for p values of 3/4, 5/4, and 7/4 can be expressed using the incomplete gamma function. The discussion highlights that while attempts using gamma distribution and integration by parts were made, these methods do not yield a closed-form solution. The incomplete gamma function serves as the definitive tool for expressing the solution for these specific p values.

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Homework Statement



Integral_0^1 x^p exp(-tx)dx where p=3/4. 5/4 and 7/4

Homework Equations



Can somebody tell me the final solution and the detailed procedure to get the final solution for this.

The Attempt at a Solution



I tried using gamma distribution and integration by parts but nothing worked.


Thanks
Kannan
 
Last edited:
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This can be expressed in terms of the incomplete gamma function (see wikipedia), but otherwise cannot be done in closed form.
 

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