Menu Close

Category: Integration

find-x-1-3-x-dx-

Question Number 45231 by maxmathsup by imad last updated on 10/Oct/18 $${find}\:\int\:\sqrt{\left({x}−\mathrm{1}\right)\left(\mathrm{3}−{x}\right)}{dx} \\ $$ Commented by maxmathsup by imad last updated on 12/Oct/18 $${let}\:{A}\:=\int\:\sqrt{\left({x}−\mathrm{1}\right)\left(\mathrm{3}−{x}\right)}{dx}\:\Rightarrow{A}\:=\int\sqrt{\mathrm{3}{x}−{x}^{\mathrm{2}} −\mathrm{3}+{x}}{dx}=\int\sqrt{−{x}^{\mathrm{2}}…

log-cosx-cos2x-1-cos-2-x-dx-

Question Number 176289 by infinityaction last updated on 15/Sep/22 $$\:\:\int\:\:\frac{\mathrm{log}\:\left(\mathrm{cos}{x}\:+\:\sqrt{\mathrm{cos2}{x}}\right)\:}{\mathrm{1}−\mathrm{cos}^{\mathrm{2}} {x}\:}{dx} \\ $$ Commented by infinityaction last updated on 16/Sep/22 $$\int\boldsymbol{\mathrm{cosec}}^{\mathrm{2}} \boldsymbol{{x}}\:\boldsymbol{\mathrm{log}}\left[\boldsymbol{\mathrm{sin}{x}}\left(\boldsymbol{\mathrm{cotx}}\:+\:\sqrt{\boldsymbol{\mathrm{cot}}^{\mathrm{2}} \boldsymbol{{x}}−\mathrm{1}\:}\right)\boldsymbol{\mathrm{dx}}\right. \\ $$$$\underset{\Psi_{\mathrm{1}}…

please-evaluate-0-1-2-ln-2-1-x-x-dx-M-N-July-1970-Good-luck-

Question Number 110749 by mnjuly1970 last updated on 30/Aug/20 $$\:\:\:\:\:\:\:\:\:\:\: \\ $$$$\:\:{please}\:{evaluate}\:: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\Omega=\int_{\mathrm{0}} ^{\:\frac{\mathrm{1}}{\mathrm{2}}} \frac{{ln}^{\mathrm{2}} \left(\mathrm{1}−{x}\right)}{{x}}\:{dx}=???\:\:\:\: \\ $$$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathscr{M}.\mathscr{N}.\mathscr{J}{uly}\:\mathrm{1970}# \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:….\:\mathscr{G}{ood}\:\:{luck}…. \\ $$$$…

Question-45164

Question Number 45164 by Tinkutara last updated on 09/Oct/18 Commented by maxmathsup by imad last updated on 09/Oct/18 $${let}\:\varphi\left({x}\right)=\:\left(\frac{{x}+{a}}{{x}+{b}}\right)^{\frac{\mathrm{1}}{\mathrm{4}}} \:=\left(\frac{{x}+{b}\:+{a}−{b}}{{x}+{b}}\right)^{\frac{\mathrm{1}}{\mathrm{4}}} \:=\left(\mathrm{1}+\frac{{a}−{b}}{{x}+{b}}\right)^{\frac{\mathrm{1}}{\mathrm{4}}} \:\Rightarrow \\ $$$$\varphi^{'} \left({x}\right)=\frac{\mathrm{1}}{\mathrm{4}}\left(−\frac{{a}−{b}}{\left({x}+{b}\right)^{\mathrm{2}}…

Question-45165

Question Number 45165 by Tinkutara last updated on 09/Oct/18 Answered by tanmay.chaudhury50@gmail.com last updated on 10/Oct/18 $$\int\frac{{sin}\mathrm{5}{x}\left(\mathrm{2}{cos}\frac{\mathrm{15}{x}}{\mathrm{2}}.{cos}\frac{\mathrm{3}{x}}{\mathrm{2}}\right)}{{sin}\mathrm{5}{x}−{sin}\mathrm{10}{x}}{dx} \\ $$$$\int\frac{\mathrm{2}{sin}\frac{\mathrm{5}{x}}{\mathrm{2}}{cos}\frac{\mathrm{5}{x}}{\mathrm{2}}\left(\mathrm{2}{cos}\frac{\mathrm{15}{x}}{\mathrm{2}}{cos}\frac{\mathrm{3}{x}}{\mathrm{2}}\right)}{−\mathrm{2}{cos}\frac{\mathrm{15}{x}}{\mathrm{2}}.{sin}\frac{\mathrm{5}{x}}{\mathrm{2}}}{dx} \\ $$$$=−\int\mathrm{2}{cos}\frac{\mathrm{5}{x}}{\mathrm{2}}.{cos}\frac{\mathrm{3}{x}}{\mathrm{2}}{dx} \\ $$$$=−\int{cos}\mathrm{4}{x}+{cosx}\:\:\:{dx} \\ $$$$=−\left(\frac{{sin}\mathrm{4}{x}}{\mathrm{4}}+{sinx}\right)+{c}…