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Category: Integration

find-0-1-dx-x-1-2x-2-1-

Question Number 96962 by mathmax by abdo last updated on 05/Jun/20 $$\mathrm{find}\:\:\int_{\mathrm{0}} ^{\mathrm{1}} \:\frac{\mathrm{dx}}{\:\sqrt{\mathrm{x}+\mathrm{1}}+\sqrt{\mathrm{2x}^{\mathrm{2}} +\mathrm{1}}} \\ $$ Answered by MJS last updated on 06/Jun/20 $$\int\frac{{dx}}{\:\sqrt{{x}+\mathrm{1}}+\sqrt{\mathrm{2}{x}^{\mathrm{2}}…

find-arctan-x-1-x-dx-

Question Number 96959 by mathmax by abdo last updated on 05/Jun/20 $$\mathrm{find}\:\int\:\mathrm{arctan}\left(\mathrm{x}−\frac{\mathrm{1}}{\mathrm{x}}\right)\mathrm{dx} \\ $$ Answered by MJS last updated on 06/Jun/20 $$\mathrm{by}\:\mathrm{parts} \\ $$$${u}=\mathrm{arctan}\:\left({x}−\frac{\mathrm{1}}{{x}}\right)\:\rightarrow\:{u}'=\frac{{x}^{\mathrm{2}} +\mathrm{1}}{{x}^{\mathrm{4}}…