### Questions (30)

 142 Evaluate $\int_0^1 \frac{\log \left( 1+x^{2+\sqrt{3}}\right)}{1+x}\mathrm dx$ 33 Evaluating $\int_0^1 \frac{\log x \log \left(1-x^4 \right)}{1+x^2}dx$ 33 Prove $\int_0^1 \frac{t^2-1}{(t^2+1)\log t}dt = 2\log\left( \frac{2\Gamma \left( \frac{5}{4}\right)}{\Gamma\left( \frac{3}{4}\right)}\right)$ 30 Prove $\int_0^\infty \frac{\ln \tan^2 (ax)}{1+x^2}\,dx = \pi\ln \tanh(a)$ 28 Evaluate $\int_0^\infty \frac{\log(1+x^3)}{(1+x^2)^2}dx$ and $\int_0^\infty \frac{\log(1+x^4)}{(1+x^2)^2}dx$

### Reputation (6,481)

 +5 A challenging logarithmic integral $\int_0^1 \frac{\log(1+x)\log(1-x)}{1+x}dx$ +10 Evaluation of the integral $\int_0^1 \log{\Gamma(x+1)}\mathrm dx$ +10 Conjecture $\int_0^1\frac{\mathrm dx}{\sqrt{1-x}\ \sqrtx\ \sqrt{2-x\,\sqrt3}}\stackrel?=\frac{2\,\sqrt2}{3\,\sqrt3}\pi$ +10 Closed form for $\int_0^1\sqrt{\frac{2-x}{(1-x)\,x}}\,\log\left(\frac{(2-x)\,x}{1-x}\right)dx$

 44 Closed form for $\int_0^1\sqrt{\frac{2-x}{(1-x)\,x}}\,\log\left(\frac{(2-x)\,x}{1-x}\right)dx$ 37 Integral $\int_0^\infty\frac{1}{x\,\sqrt{2}+\sqrt{2\,x^2+1}}\cdot\frac{\log x}{\sqrt{x^2+1}}\mathrm dx$ 36 A closed form for $\int_0^\infty\frac{\ln(x+4)}{\sqrt{x\,(x+3)\,(x+4)}}dx$ 24 Integral $\int_0^1\frac{\log(1-x)}{\sqrt{x-x^3}}dx$ 24 A Tough Series $\sum_{k=1}^\infty \frac{\zeta(2k+1)-1}{k+1}=-\gamma+\log(2)$

### Tags (36)

 272 integration × 32 72 improper-integrals × 13 211 definite-integrals × 26 57 sequences-and-series × 14 204 calculus × 18 38 riemann-zeta × 4 184 closed-form × 14 29 analysis × 11 117 logarithms × 4 22 real-analysis × 8

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