Question Number 37143 by rahul 19 last updated on 09/Jun/18 $$\mathrm{Why}\:\mathrm{are}\:\mathrm{following}\:\mathrm{statements}\:\mathrm{wrong}? \\ $$$$\left.\mathrm{a}\right)\:\mathrm{There}\:\mathrm{exists}\:\mathrm{a}\:\mathrm{function}\:\mathrm{with}\:\mathrm{domain}\: \\ $$$$\mathrm{R}\:\mathrm{satisfying}\:\mathrm{f}\left(\mathrm{x}\right)<\mathrm{0}\:\forall\mathrm{x}\:,\:\mathrm{f}'\left(\mathrm{x}\right)>\mathrm{0}\forall\mathrm{x}\:\mathrm{and} \\ $$$$\mathrm{f}''\left(\mathrm{x}\right)>\mathrm{0}\forall\mathrm{x}. \\ $$$$ \\ $$$$\left.\mathrm{b}\right)\:\mathrm{If}\:\mathrm{f}''\left(\mathrm{c}\right)=\mathrm{0}\:\mathrm{then}\:\left(\mathrm{c},\mathrm{f}\left(\mathrm{c}\right)\right)\:\mathrm{is}\:\mathrm{an}\:\mathrm{inflection} \\ $$$$\mathrm{point}. \\ $$…
Question Number 168188 by cortano1 last updated on 05/Apr/22 $$\:\:\:\:\:\int\:\frac{\mathrm{1}−\mathrm{sin}\:\mathrm{2}{x}}{\left(\mathrm{1}+\mathrm{sin}\:\mathrm{2}{x}\right)^{\mathrm{2}} }\:{dx}\:=? \\ $$ Commented by Florian last updated on 09/Apr/22 $$\:\:?=\frac{\mathrm{1}}{\mathrm{2}\sqrt{\mathrm{2}}}{arctan}\left(\sqrt{\mathrm{2}}\:{tan}\left(\mathrm{2}{x}\right)\right)+\frac{\mathrm{1}}{\mathrm{4}\sqrt{\mathrm{2}}}\left({ln}\mid\frac{\mathrm{1}}{\:\sqrt{\mathrm{2}}}{cos}\left(\mathrm{2}{x}\right)+\mathrm{1}\mid\:{ln}\mid\frac{\mathrm{1}}{\:\sqrt{\mathrm{2}}}{cos}\left(\mathrm{2}{x}\right)−\mathrm{1}\mid\right)+{c},\:{c}\in{R} \\ $$ Answered by…
Question Number 37108 by rahul 19 last updated on 09/Jun/18 $$\mathrm{If}\:\mathrm{4}{x}+\mathrm{8cos}\:{x}+\mathrm{tan}\:{x}−\mathrm{2sec}\:{x}−\mathrm{4log}\:\left\{\mathrm{cos}{x}\left(\mathrm{1}+\mathrm{sin}\:{x}\right)\right\}\geqslant\mathrm{6} \\ $$$$\forall\:{x}\:\epsilon\:\left[\mathrm{0},\psi\right)\:\mathrm{then}\:\mathrm{largest}\:\mathrm{value}\:\mathrm{of}\:\psi\:\mathrm{is}\:? \\ $$ Answered by ajfour last updated on 09/Jun/18 $${f}\left({x}\right)=\mathrm{4}{x}+\mathrm{8cos}\:{x}+\mathrm{tan}\:{x}−\mathrm{4ln}\:\left\{\mathrm{cos}\:{x}\left(\mathrm{1}+\mathrm{sin}\:{x}\right)\right\}−\mathrm{6} \\ $$$${f}\left(\mathrm{0}\right)=\mathrm{8}…
Question Number 37079 by rahul 19 last updated on 08/Jun/18 Answered by ajfour last updated on 09/Jun/18 $${f}\:''\left({x}\right)−\mathrm{3}{f}\:'\left({x}\right)\:>\:\mathrm{3} \\ $$$$\Rightarrow\:\:\:{f}\:''\left(\mathrm{0}\right)\:>\:\mathrm{0} \\ $$$${for}\:{x}\:>\:\mathrm{0}\:\:{f}\:'\left({x}\right)\:>\:−\mathrm{1}\:\:\:\:\:\:\:….\left({i}\right) \\ $$$$\frac{{d}}{{dx}}\left[\:{f}\left({x}\right)+{x}\right]\:=\:{f}\:'\left({x}\right)+\mathrm{1}\: \\…
Question Number 102606 by bemath last updated on 10/Jul/20 $${what}\:{is}\:{the}\:{volume}\:{of}\:{region} \\ $$$${bounded}\:{by}\:{y}\:={x}^{\mathrm{2}} −\mathrm{2}{x}\:{and} \\ $$$${y}={x}\:{that}\:{is}\:{rotated}\:{about} \\ $$$${y}=\mathrm{4}\:? \\ $$ Commented by bemath last updated on…
Question Number 37071 by math khazana by abdo last updated on 08/Jun/18 $${find}\:{the}\:{value}\:{of}\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}} \:\:\:\frac{{xdx}}{\mathrm{1}+{cosx}} \\ $$ Commented by math khazana by abdo last updated…
Question Number 37067 by math khazana by abdo last updated on 08/Jun/18 $${find}\:\int\:\:\:\:\:\frac{{dx}}{\left({x}+\mathrm{1}\right)\sqrt{\mathrm{1}+{x}^{\mathrm{2}} }} \\ $$ Commented by math khazana by abdo last updated on…
Question Number 37036 by ajfour last updated on 08/Jun/18 $$\int_{\mathrm{0}} ^{\:\:{a}} \left(\mathrm{1}−\frac{{b}−{x}}{\:\sqrt{\left({b}−{x}\right)^{\mathrm{2}} +{cx}}}\right)\:{dx}\:=\:? \\ $$ Commented by math khazana by abdo last updated on 09/Jun/18…
Question Number 37028 by nishant last updated on 08/Jun/18 $$\int\frac{\mathrm{2}{x}−\mathrm{1}}{\mathrm{5}{x}^{\mathrm{2}} −{x}+\mathrm{2}}\:{dx}\:\:=\:\:? \\ $$ Answered by ajfour last updated on 08/Jun/18 $${I}=\frac{\mathrm{1}}{\mathrm{5}}\int\frac{\mathrm{10}{x}−\mathrm{1}}{\mathrm{5}{x}^{\mathrm{2}} −{x}+\mathrm{2}}{dx}\:−\frac{\mathrm{4}}{\mathrm{25}}\int\frac{{dx}}{\left({x}−\frac{\mathrm{1}}{\mathrm{10}}\right)^{\mathrm{2}} +\frac{\mathrm{2}}{\mathrm{5}}−\frac{\mathrm{1}}{\mathrm{100}}} \\ $$$$\:\:=\frac{\mathrm{1}}{\mathrm{5}}\mathrm{ln}\:\mid\mathrm{5}{x}^{\mathrm{2}}…
Question Number 102555 by Dwaipayan Shikari last updated on 09/Jul/20 $$\int_{\mathrm{0}} ^{\mathrm{1}} \frac{{x}^{\mathrm{98}} −\mathrm{99}{x}+\mathrm{98}}{{logx}}{dx} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com