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Category: Integration

let-f-a-0-1-ln-1-x-a-1-x-dx-with-a-gt-0-1-explicite-f-a-2-find-g-a-0-1-1-x-1-x-a-1-x-dx-3-find-the-value-of-0-1-ln-1-x-2-1-x-dx-and-0-1-ln-

Question Number 92407 by mathmax by abdo last updated on 06/May/20 letf(a)=01ln(1+x+a1x)dxwitha>01)explicitef(a)2)findg(a)=011x1+x+a1xdx$$\left.\mathrm{3}\right)\:{find}\:{the}\:{value}\:{of}\:\:\int_{\mathrm{0}} ^{\mathrm{1}} {ln}\left(\sqrt{\mathrm{1}+{x}}+\mathrm{2}\sqrt{\mathrm{1}−{x}}\right){dx} \

1-x-1-x-2-dx-x-sin-w-cos-w-dw-sin-w-cos-w-dw-tan-w-1-sec-2-w-dw-tan-w-1-sec-2-w-du-u-1-u-2-1-u-tan-w-du-2-u-1-u-du-

Question Number 92397 by john santu last updated on 06/May/20 1x1x2dx[x=sinw]coswdwsinwcosw=dwtanw1=sec2wdw(tanw1)sec2w=du(u1)(u2+1);[u=tanw]$$=\:\int\:\frac{\mathrm{du}}{\mathrm{2}\left(\mathrm{u}−\mathrm{1}\right)}−\int\:\frac{\mathrm{u}\:\mathrm{du}\:}{\mathrm{2}\left(\mathrm{u}^{\mathrm{2}}…

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

Question Number 92394 by john santu last updated on 06/May/20 ln(1x+1+x)dx Commented by mathmax by abdo last updated on 06/May/20 I=ln(1x+1+x)dxbyparts$${I}\:={x}\left(\sqrt{\mathrm{1}−{x}}+\sqrt{\mathrm{1}+{x}}\right)−\int\:{x}\frac{\left(\sqrt{\mathrm{1}−{x}}+\sqrt{\mathrm{1}+{x}}\right)^{'}…