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Category: Integration

0-1-ln-1-x-ln-1-x-x-dx-

Question Number 223241 by Tawa11 last updated on 19/Jul/25 $$\int_{\:\mathrm{0}} ^{\:\mathrm{1}} \:\frac{\mathrm{ln}\left(\mathrm{1}\:−\:\mathrm{x}\right)\:\mathrm{ln}\left(\mathrm{1}\:+\:\mathrm{x}\right)}{\mathrm{x}}\:\mathrm{dx} \\ $$ Answered by altarboy123 last updated on 19/Jul/25 $$=−\frac{\zeta\left(\mathrm{3}\right)}{\mathrm{4}} \\ $$ Commented…

pi-6-pi-3-dx-1-tanx-

Question Number 223204 by Nadirhashim last updated on 17/Jul/25 $$\:\:\:\underset{\frac{\pi}{\mathrm{6}}} {\overset{\frac{\pi}{\mathrm{3}}} {\int}}\frac{\boldsymbol{{dx}}}{\mathrm{1}+\sqrt{\boldsymbol{{tanx}}}}\:=…? \\ $$ Answered by som(math1967) last updated on 17/Jul/25 $$\:\:\:{I}=\int_{\frac{\pi}{\mathrm{6}}\:} ^{\frac{\pi}{\mathrm{3}}} \frac{{dx}}{\mathrm{1}+\sqrt{{tan}\left(\frac{\pi}{\mathrm{3}}+\frac{\pi}{\mathrm{6}}−{x}\right)}} \\…

1-3-1-3-x-4-1-x-4-cos-1-2-1-x-2-dx-

Question Number 223096 by fantastic last updated on 14/Jul/25 $$\underset{−\frac{\mathrm{1}}{\:\sqrt{\mathrm{3}}}} {\overset{\frac{\mathrm{1}}{\:\sqrt{\mathrm{3}}}} {\int}}\:\:\frac{{x}^{\mathrm{4}} }{\mathrm{1}−{x}^{\mathrm{4}} }\mathrm{cos}^{−\mathrm{1}} \left(\frac{\mathrm{2}}{\mathrm{1}+{x}^{\mathrm{2}} }\right){dx}=? \\ $$ Answered by MathematicalUser2357 last updated on 22/Jul/25…

0-x-2-cosh-x-2-2-dx-

Question Number 223090 by MrGaster last updated on 14/Jul/25 $$\int_{\mathrm{0}} ^{\infty} \frac{{x}^{\mathrm{2}} }{\left(\mathrm{cosh}\left({x}^{\mathrm{2}} \right)\right)^{\mathrm{2}} }\mathrm{d}{x} \\ $$ Commented by Tawa11 last updated on 18/Jul/25 $$\mathrm{I}\:\mathrm{got}:\:\:\:\:\:\frac{\sqrt{\pi}}{\mathrm{2}\sqrt{\mathrm{2}}}\:\eta\left(\frac{\mathrm{1}}{\mathrm{2}}\right)\:\:\:\:\mathrm{where}\:\:\eta\:\:\mathrm{is}\:\:'\mathrm{Eta}'\:\:\mathrm{function}.…