Solving Gamma Function Int xe^-x^3 from 0 to Infinity

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SUMMARY

The integral of the function xe^{-x^{3}} from 0 to infinity can be solved using the substitution method. By substituting u=x^3, the integral simplifies, allowing for the application of the Gamma function. The final result is Gamma(2/3)/3, as confirmed by Wolfram Alpha. This method effectively addresses the complexity introduced by the exponent of 3 in the exponential function.

PREREQUISITES
  • Understanding of integral calculus
  • Familiarity with the Gamma function
  • Knowledge of substitution methods in integration
  • Basic proficiency in using mathematical software like Wolfram Alpha
NEXT STEPS
  • Study the properties and applications of the Gamma function
  • Learn advanced integration techniques, particularly substitution methods
  • Explore the use of mathematical software for solving integrals
  • Investigate the implications of variable transformations in calculus
USEFUL FOR

Students studying calculus, mathematicians interested in integral solutions, and anyone looking to deepen their understanding of the Gamma function and integration techniques.

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Homework Statement



\int xe^{-x^{3}}dx

from 0 to infinity

Homework Equations



\Gamma = \int x^{p-1}e^{-x}

from 0 to infinity

The Attempt at a Solution



my problem is I'm not sure what i am supposed to do with the exponent of 3 on the e, because it seems to affect the answer. Wolfram gave me gamma(2/3)/3.

My textbook states nothing on it and i can't find anything on the net.
 
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Sure it affects the answer. Get rid of it by substituting u=x^3 and change everything to the variable u.
 
Dick said:
Sure it affects the answer. Get rid of it by substituting u=x^3 and change everything to the variable u.

worked, thank you
 

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