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Question Number 111873 by bemath last updated on 05/Sep/20 $$\:\:\:\sqrt{{bemath}} \\ $$$$\int\:\frac{\mathrm{2}−\mathrm{cos}\:{x}}{\mathrm{2}+\mathrm{cos}\:{x}}\:{dx}\: \\ $$ Answered by Lordose last updated on 05/Sep/20 $$ \\ $$$$\boldsymbol{\mathrm{Set}}\:\boldsymbol{\mathrm{u}}=\boldsymbol{\mathrm{tan}}\frac{\boldsymbol{\mathrm{x}}}{\mathrm{2}}\:\Rightarrow\boldsymbol{\mathrm{du}}=\frac{\mathrm{1}}{\mathrm{2}}\boldsymbol{\mathrm{sec}}^{\mathrm{2}} \frac{\boldsymbol{\mathrm{x}}}{\mathrm{2}}\boldsymbol{\mathrm{dx}}…
Question Number 111859 by ajfour last updated on 05/Sep/20 $${I}=\int\frac{{dx}}{\left({x}^{\mathrm{2}} +\mathrm{2}{x}+\mathrm{3}\right)\sqrt{{x}^{\mathrm{2}} +{x}+\mathrm{3}}}\:=\:? \\ $$$${my}\:{try}.. \\ $$ Commented by Sarah85 last updated on 05/Sep/20 $$\mathrm{my}\:\mathrm{try}: \\…
Question Number 46323 by MJS last updated on 24/Oct/18 $$\left(\mathrm{1}{a}\right)\:\:\int\frac{{dx}}{\mathrm{e}^{\mathrm{5}{x}} +\mathrm{e}^{\mathrm{3}{x}} +\mathrm{e}^{\mathrm{2}{x}} }=? \\ $$$$\left(\mathrm{1}{b}\right)\:\:\int\frac{{dx}}{\mathrm{e}^{\mathrm{5}{x}} −\mathrm{e}^{\mathrm{3}{x}} −\mathrm{e}^{\mathrm{2}{x}} }=? \\ $$$$\left(\mathrm{2}{a}\right)\:\:\int\frac{{dx}}{{x}^{\frac{\mathrm{5}}{\mathrm{3}}} +{x}^{\frac{\mathrm{3}}{\mathrm{5}}} }=? \\ $$$$\left(\mathrm{2}{b}\right)\:\:\int\frac{{dx}}{{x}^{\frac{\mathrm{5}}{\mathrm{3}}} −{x}^{\frac{\mathrm{3}}{\mathrm{5}}}…
Question Number 111818 by bemath last updated on 05/Sep/20 $$\:\:\:\sqrt{{bemath}\:} \\ $$$$\left(\mathrm{1}\right)\int\:\frac{\mathrm{cos}\:{x}}{\mathrm{2}−\mathrm{cos}\:{x}}\:{dx}\: \\ $$$$\left(\mathrm{2}\right)\:{f}\left({x}\right)\:=\:\mid{x}^{\mathrm{3}} \mid\:\Rightarrow\:{f}\:'\left({x}\right)\:? \\ $$ Answered by bobhans last updated on 05/Sep/20 $$\mathrm{f}\left(\mathrm{x}\right)\:=\:\mid\mathrm{x}^{\mathrm{3}}…
Question Number 46252 by rahul 19 last updated on 23/Oct/18 Answered by MJS last updated on 23/Oct/18 $${r}=\sqrt{{x}^{\mathrm{2}} +{y}^{\mathrm{2}} }=\sqrt{\left(\mathrm{cos}^{\mathrm{2}} \:\theta\:+\mathrm{sin}^{\mathrm{2}} \:\theta\right)\mathrm{cos}^{\mathrm{2}} \:\mathrm{4}\theta}=\mid\mathrm{cos}\:\mathrm{4}\theta\mid \\ $$$$\left.\Rightarrow\:{A}\right)…
Question Number 46238 by Meritguide1234 last updated on 23/Oct/18 Commented by math1967 last updated on 23/Oct/18 $${cotxcot}\mathrm{2}{xcot}\mathrm{3}{x}={cotx}+{cot}\mathrm{2}{x}+{cot}\mathrm{3}{x} \\ $$ Commented by Meritguide1234 last updated on…
Question Number 111771 by mathmax by abdo last updated on 04/Sep/20 $$\mathrm{calculate}\:\mathrm{lim}_{\mathrm{n}\rightarrow+\infty} \mathrm{a}_{\mathrm{n}} \int_{\mathrm{0}} ^{\mathrm{1}} \:\mathrm{x}^{\mathrm{2n}} \mathrm{sin}\left(\frac{\pi\mathrm{x}}{\mathrm{2}}\right)\mathrm{dx}\:\mathrm{with}\:\mathrm{a}_{\mathrm{n}} =\sum_{\mathrm{k}=\mathrm{1}} ^{\mathrm{n}} \:\mathrm{sin}\left(\frac{\pi\mathrm{k}}{\mathrm{2n}}\right) \\ $$ Terms of Service…
Question Number 111770 by mathmax by abdo last updated on 04/Sep/20 $$\mathrm{f}\:\mathrm{function}\:\mathrm{continue}\:\mathrm{on}\:\left[\mathrm{0},\mathrm{1}\right]\:\mathrm{find}\:\mathrm{lim}_{\mathrm{n}\rightarrow+\infty} \:\frac{\mathrm{1}}{\mathrm{n}}\sum_{\mathrm{k}=\mathrm{0}} ^{\mathrm{n}} \left(\mathrm{n}−\mathrm{k}\right)\int_{\frac{\mathrm{k}}{\mathrm{n}}} ^{\frac{\mathrm{k}+\mathrm{1}}{\mathrm{n}}} \mathrm{f}\left(\mathrm{x}\right)\mathrm{dx} \\ $$ Terms of Service Privacy Policy Contact:…
Question Number 111768 by mathmax by abdo last updated on 04/Sep/20 $$\mathrm{explicite}\:\mathrm{f}\left(\mathrm{x}\right)\:=\int_{\mathrm{0}} ^{\mathrm{2}\pi} \mathrm{ln}\left(\mathrm{x}^{\mathrm{2}} −\mathrm{2xcos}\theta\:+\mathrm{1}\right)\mathrm{d}\theta\:\:\:\:\:\:\:\:\left(\mathrm{x}\neq\overset{−} {+}\mathrm{1}\right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com