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Category: Integration

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

Question Number 38105 by maxmathsup by imad last updated on 21/Jun/18 $${find}\:\int\:\:\:\:\:\frac{{dx}}{\:\sqrt{\mathrm{2}{x}+\mathrm{1}}\:+\sqrt{\mathrm{2}{x}−\mathrm{1}}}\: \\ $$ Answered by MJS last updated on 22/Jun/18 $$\int\frac{{dx}}{\:\sqrt{\mathrm{2}{x}+\mathrm{1}}+\sqrt{\mathrm{2}{x}−\mathrm{1}}}=\frac{\mathrm{1}}{\mathrm{2}}\int\left(\sqrt{\mathrm{2}{x}+\mathrm{1}}−\sqrt{\mathrm{2}{x}−\mathrm{1}}\right){dx}= \\ $$$$=\frac{\mathrm{1}}{\mathrm{6}}\left(\left(\mathrm{2}{x}+\mathrm{1}\right)^{\frac{\mathrm{3}}{\mathrm{2}}} −\left(\mathrm{2}{x}−\mathrm{1}\right)^{\frac{\mathrm{3}}{\mathrm{2}}}…

what-is-the-value-of-c-x-2y-dx-4-2x-dy-around-the-ellipse-C-x-2-16-y-2-8-1-in-the-counterclockwise-direction-

Question Number 103607 by bemath last updated on 16/Jul/20 $${what}\:{is}\:{the}\:{value}\:{of}\:\int_{{c}} \left({x}+\mathrm{2}{y}\right){dx}+\left(\mathrm{4}−\mathrm{2}{x}\right){dy} \\ $$$${around}\:{the}\:{ellipse}\:{C}:\:\frac{{x}^{\mathrm{2}} }{\mathrm{16}}+\frac{{y}^{\mathrm{2}} }{\mathrm{8}}=\mathrm{1} \\ $$$${in}\:{the}\:{counterclockwise} \\ $$$${direction}\:?\: \\ $$ Answered by bobhans last…

cos-5x-cos-4x-1-2cos-3x-dx-

Question Number 38057 by ajfour last updated on 21/Jun/18 $$\int\frac{\mathrm{cos}\:\mathrm{5}{x}+\mathrm{cos}\:\mathrm{4}{x}}{\mathrm{1}−\mathrm{2cos}\:\mathrm{3}{x}}{dx}\:\:=\:? \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 21/Jun/18 $$\int\frac{{sin}\mathrm{3}{x}\left({cos}\mathrm{5}{x}+{coz}\mathrm{4}{x}\right)}{{sin}\mathrm{3}{x}−{sin}\mathrm{6}{x}}{dx} \\ $$$$\int\frac{{sin}\mathrm{3}{x}\left({cos}\mathrm{5}{x}+{cos}\mathrm{4}{x}\right)}{−\mathrm{2}{cos}\frac{\mathrm{9}{x}}{\mathrm{2}}{sin}\frac{\mathrm{3}{x}}{\mathrm{2}}}{dx} \\ $$$$\int\frac{\mathrm{2}{sin}\frac{\mathrm{3}{x}}{\mathrm{2}}{cos}\frac{\mathrm{3}{x}}{\mathrm{2}}×\mathrm{2}{cos}\frac{\mathrm{9}{x}}{\mathrm{2}}{cos}\frac{{x}}{\mathrm{2}}}{−\mathrm{2}{cos}\frac{\mathrm{9}{x}}{\mathrm{2}}{sin}\frac{\mathrm{3}{x}}{\mathrm{2}}}{dx} \\…