Nice Integral-~~~~

plz solve

1) \int_{0}^{\infty}{\frac{1}{(x^2+a^2)(x^2+b^2)}}dx

2) \int_{0}^{\pi}{log(1-6cosx+9)}dx

3)\int_{0}^{1}{\frac{x^{a-1}-x^{-a}}{(1+x)logx}}dx

31 Answers

ok wat abt rest of them

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