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Hard integrals

  • Thread starter dirk_mec1
  • Start date
  • #26
761
13
OK, I'm also stuck with these two:

[tex] \int_0^{\infty} \sin(x) atan\left( \frac{1}{x} \right) \mbox{d}x [/tex]


[tex] \int_0^{\infty} \frac{1}{x} \sin( \tan(x)) \mbox{d}x [/tex]


I've tried u=sin(x) for the first one and IBP with no result. For the second one I've tried u =tan(x) and IBP.
 

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