Integrating Hard Integral 2: Can Someone Give Me a Hint?

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SUMMARY

The integral in question is \int_0^1 \frac{x^4(1-x)^4}{1+x^2}\ dx. The discussion highlights the challenges faced with various integration techniques, including trigonometric substitution and integration by parts, which complicate the solution. A key suggestion is to simplify the integral by dividing the polynomials, leading to a more manageable form. This approach is recommended for those struggling with the complexity of the original integral.

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  • Understanding of polynomial division in calculus
  • Familiarity with integration techniques such as integration by parts
  • Knowledge of trigonometric substitution methods
  • Experience with series expansions in calculus
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  • Review integration by parts techniques and their applications
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  • Explore series expansion techniques for integrals
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Homework Statement



[tex] \int_0^1 \frac{x^4(1-x)^4}{1+x^2}\ dx[/tex]

The Attempt at a Solution


A gonio substitution gets nasty really fast moreover the differentiation under the integral sign trick doesn't seem to give more insight (at least that's what I think). Integration by parts gets a ln(.) times something nasty. The boundaries suggest a series expansion or a smart substitution...

Can someone give me a hint?
 
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divide the two polinomials
and youll get an easier integral
 

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