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0-1-ln-1-x-ln-1-x-1-x-dx-




Question Number 223728 by Nicholas666 last updated on 03/Aug/25
              ∫_0_   ^1  ((ln(1+(√x))∙ln(1+x))/(1+(√x))) dx
$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\int_{\mathrm{0}_{\:} } ^{\mathrm{1}} \:\frac{\mathrm{ln}\left(\mathrm{1}+\sqrt{{x}}\right)\centerdot\mathrm{ln}\left(\mathrm{1}+{x}\right)}{\mathrm{1}+\sqrt{{x}}}\:\mathrm{d}{x} \\ $$
Answered by Tawa11 last updated on 14/Aug/25
Finally:     ∫_( 0) ^( 1)  ((ln(1 + (√x)) ln(1  +  x))/(1  +  (√x))) dx    =  (7/2) ln^2 (2)  −  10 ln(2)  −  (π^2 /(24))   +  8  −  π  +  (π/2) ln(2)  −  ((11)/(12)) ln^3 (2)  +  (π^2 /(48)) ln(2)
$$\mathrm{Finally}: \\ $$$$\:\:\:\int_{\:\mathrm{0}} ^{\:\mathrm{1}} \:\frac{\mathrm{ln}\left(\mathrm{1}\:+\:\sqrt{\mathrm{x}}\right)\:\mathrm{ln}\left(\mathrm{1}\:\:+\:\:\mathrm{x}\right)}{\mathrm{1}\:\:+\:\:\sqrt{\mathrm{x}}}\:\mathrm{dx} \\ $$$$\:\:=\:\:\frac{\mathrm{7}}{\mathrm{2}}\:\mathrm{ln}^{\mathrm{2}} \left(\mathrm{2}\right)\:\:−\:\:\mathrm{10}\:\mathrm{ln}\left(\mathrm{2}\right)\:\:−\:\:\frac{\pi^{\mathrm{2}} }{\mathrm{24}}\:\:\:+\:\:\mathrm{8}\:\:−\:\:\pi\:\:+\:\:\frac{\pi}{\mathrm{2}}\:\mathrm{ln}\left(\mathrm{2}\right)\:\:−\:\:\frac{\mathrm{11}}{\mathrm{12}}\:\mathrm{ln}^{\mathrm{3}} \left(\mathrm{2}\right)\:\:+\:\:\frac{\pi^{\mathrm{2}} }{\mathrm{48}}\:\mathrm{ln}\left(\mathrm{2}\right) \\ $$
Commented by Nicholas666 last updated on 17/Aug/25
wow , but can you show that?
$$\mathrm{wow}\:,\:\mathrm{but}\:\mathrm{can}\:\mathrm{you}\:\mathrm{show}\:\mathrm{that}? \\ $$
Commented by Tawa11 last updated on 20/Aug/25
Yes sir.  But long derivation.
$$\mathrm{Yes}\:\mathrm{sir}. \\ $$$$\mathrm{But}\:\mathrm{long}\:\mathrm{derivation}. \\ $$
Commented by Tawa11 last updated on 28/Aug/25
Sir, are you on whatsapp or telegram?  Drop your either whatsapp or tegram number.  I can send the file I created for the solution.  I had a long derivative.
$$\mathrm{Sir},\:\mathrm{are}\:\mathrm{you}\:\mathrm{on}\:\mathrm{whatsapp}\:\mathrm{or}\:\mathrm{telegram}? \\ $$$$\mathrm{Drop}\:\mathrm{your}\:\mathrm{either}\:\mathrm{whatsapp}\:\mathrm{or}\:\mathrm{tegram}\:\mathrm{number}. \\ $$$$\mathrm{I}\:\mathrm{can}\:\mathrm{send}\:\mathrm{the}\:\mathrm{file}\:\mathrm{I}\:\mathrm{created}\:\mathrm{for}\:\mathrm{the}\:\mathrm{solution}. \\ $$$$\mathrm{I}\:\mathrm{had}\:\mathrm{a}\:\mathrm{long}\:\mathrm{derivative}. \\ $$

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