Menu Close

Category: Integration

Question-152147

Question Number 152147 by john_santu last updated on 26/Aug/21 Answered by Ar Brandon last updated on 26/Aug/21 $${I}_{{n}} =\int_{−\mathrm{1}} ^{\mathrm{1}} \left(\sqrt{{x}^{\mathrm{2}} +\frac{\mathrm{1}}{{n}}}−\mid{x}\mid\right){dx} \\ $$$$\:\:\:\:=\mathrm{2}\int_{\mathrm{0}} ^{\mathrm{1}}…

0-1-x-1-x-x-2-2-ln-ln-1-x-dx-3-1-3-ln-6-3-pi-pi-3-27-5ln2pi-6ln-1-6-

Question Number 152142 by Ar Brandon last updated on 26/Aug/21 $$\int_{\mathrm{0}} ^{\mathrm{1}} \frac{{x}}{\left(\mathrm{1}−{x}+{x}^{\mathrm{2}} \right)^{\mathrm{2}} }\mathrm{ln}\left(\mathrm{ln}\frac{\mathrm{1}}{{x}}\right){dx}=−\frac{\gamma}{\mathrm{3}}−\frac{\mathrm{1}}{\mathrm{3}}\mathrm{ln}\frac{\mathrm{6}\sqrt{\mathrm{3}}}{\pi}+\frac{\pi\sqrt{\mathrm{3}}}{\mathrm{27}}\left(\mathrm{5ln2}\pi−\mathrm{6ln}\Gamma\left(\frac{\mathrm{1}}{\mathrm{6}}\right)\right) \\ $$ Answered by mindispower last updated on 28/Aug/21 $$\int_{\mathrm{0}}…

If-I-n-cos-nx-cos-x-dx-then-1-n-

Question Number 152112 by peter frank last updated on 25/Aug/21 $$\mathrm{If}\:\mathrm{I}_{\mathrm{n}} =\int\frac{\mathrm{cos}\:\mathrm{nx}}{\mathrm{cos}\:\mathrm{x}}\mathrm{dx}\:\:\:\mathrm{then}\:\mathrm{1}_{\mathrm{n}} =? \\ $$ Answered by Olaf_Thorendsen last updated on 26/Aug/21 $$\mathrm{I}_{{n}} \:=\:\int\frac{\mathrm{cos}\left({nx}\right)}{\mathrm{cos}{x}}\:{dx} \\…

Question-86578

Question Number 86578 by Omer Alattas last updated on 29/Mar/20 Commented by john santu last updated on 29/Mar/20 $$\mathrm{let}\:\mathrm{F}\left(\mathrm{x}\right)\:\mathrm{antiderivative}\:\mathrm{f}\left(\mathrm{x}\right)\:=\:\int\underset{\mathrm{3}} {\overset{\:\mathrm{x}} {\:}}\:\frac{\mathrm{sin}\:\mathrm{t}\:\mathrm{dt}}{\mathrm{t}} \\ $$$$\mathrm{such}\:\mathrm{that}\:\mathrm{f}\left(\mathrm{x}\right)\:=\:\mathrm{F}\left(\mathrm{x}\right)\:−\mathrm{F}\left(\mathrm{3}\right) \\ $$$$\mathrm{now}\:\underset{{x}\rightarrow\mathrm{3}}…

sin-x-1-sin-x-dx-

Question Number 152116 by peter frank last updated on 25/Aug/21 $$\int\frac{\mathrm{sin}\:\mathrm{x}}{\:\sqrt{\mathrm{1}+\mathrm{sin}\:\mathrm{x}}}\mathrm{dx} \\ $$ Commented by puissant last updated on 26/Aug/21 $${Q}=\int\frac{−{cos}\left(\frac{\pi}{\mathrm{2}}+{x}\right)}{\:\sqrt{\left({sin}\left(\frac{{x}}{\mathrm{2}}\right)+{cos}\left(\frac{{x}}{\mathrm{2}}\right)\right)^{\mathrm{2}} }}{dx} \\ $$$$=−\int\frac{{cos}\left(\frac{\pi}{\mathrm{2}}+{x}\right)}{{sin}\left(\frac{{x}}{\mathrm{2}}\right)+{cos}\left(\frac{{x}}{\mathrm{2}}\right)}{dx} \\…

ln-1-arc-sin-x-2-sin-x-2-dx-

Question Number 86576 by jagoll last updated on 29/Mar/20 $$\int\:\frac{\mathrm{ln}\:\left(\mathrm{1}+\mathrm{arc}\:\mathrm{sin}\:\left(\mathrm{x}^{\mathrm{2}} \right)\right)}{\mathrm{sin}\:\left(\mathrm{x}^{\mathrm{2}} \right)}\:\mathrm{dx}\:? \\ $$ Commented by M±th+et£s last updated on 29/Mar/20 $${sir}\:{you}\:{mean}\:{arcsin}\left({x}^{\mathrm{2}} \right)\:{or}\:\left({a}\right){sin}\left({x}^{\mathrm{2}} \right) \\…