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Category: Integration

3-x-x-1-dx-

Question Number 130678 by EDWIN88 last updated on 28/Jan/21 $$\:\int\:\frac{\mathrm{3}\sqrt{{x}}}{{x}−\mathrm{1}}\:{dx}\:?\: \\ $$ Answered by liberty last updated on 28/Jan/21 $$\mathrm{L}\:=\:\int\:\frac{\mathrm{3}\sqrt{\mathrm{x}}}{\mathrm{x}−\mathrm{1}}\:\mathrm{dx}\:;\:\left[\:\mathrm{x}=\mathrm{u}^{\mathrm{2}} \:\right] \\ $$$$\mathrm{L}=\mathrm{6}\int\:\frac{\mathrm{u}^{\mathrm{2}} }{\mathrm{u}^{\mathrm{2}} −\mathrm{1}}\:\mathrm{du}\:=\:\mathrm{6}\int\:\left(\mathrm{1}+\frac{\mathrm{1}}{\mathrm{u}^{\mathrm{2}}…

dx-x-2-3-x-1-2-

Question Number 65137 by Tony Lin last updated on 25/Jul/19 $$\int\frac{{dx}}{\left({x}−\mathrm{2}\right)^{\mathrm{3}} \left({x}+\mathrm{1}\right)^{\mathrm{2}} }=? \\ $$ Commented by mathmax by abdo last updated on 25/Jul/19 $${let}\:{I}\:=\int\:\:\:\frac{{dx}}{\left({x}−\mathrm{2}\right)^{\mathrm{3}}…