Question Number 57489 by Abdo msup. last updated on 05/Apr/19 $${find}\:{the}\:{value}\:{of}\:\:\sum_{{n}=\mathrm{2}} ^{\infty} \:\:\:\frac{\mathrm{3}{n}^{\mathrm{2}} \:+\mathrm{1}}{\left({n}−\mathrm{1}\right)^{\mathrm{3}} \left({n}+\mathrm{1}\right)^{\mathrm{3}} } \\ $$ Commented by maxmathsup by imad last updated…
Question Number 57488 by Abdo msup. last updated on 05/Apr/19 $${let}\:{A}_{{n}} =\int_{\mathrm{0}} ^{{n}} \:\:\:\frac{{t}\left[{t}\right]}{\mathrm{3}+{t}^{\mathrm{2}} }{dt} \\ $$$$\left.\mathrm{1}\right){calculate}\:{lim}_{{n}\rightarrow+\infty} \:\:{A}_{{n}} \\ $$$$\left.\mathrm{2}\right)\:{find}\:{nature}\:{if}\:\Sigma\:{A}_{{n}} \\ $$ Commented by maxmathsup…
Question Number 57486 by Abdo msup. last updated on 05/Apr/19 $${let}\:{f}\left({x}\right)\:=\frac{{ln}\left(\mathrm{1}+{x}\right)}{\mathrm{2}−{x}^{\mathrm{2}} } \\ $$$$\left.\mathrm{1}\right){calculate}\:{f}^{\left({n}\right)} \left({x}\right)\:\: \\ $$$$\left.\mathrm{2}\right)\:{calculate}\:{f}^{\left({n}\right)} \left(\mathrm{0}\right) \\ $$$$\left.\mathrm{3}\right){developp}\:{f}\left({x}\right)\:{at}\:{integr}\:{serie}. \\ $$ Commented by maxmathsup…
Question Number 122998 by benjo_mathlover last updated on 21/Nov/20 $$\:{f}:{R}\rightarrow{R}\: \\ $$$$\:{f}\left({x}\right)\:=\:\begin{cases}{{x}^{\mathrm{2}} +\mathrm{2}{mx}−\mathrm{1}\:;\:{x}\leqslant\mathrm{0}}\\{{mx}−\mathrm{1}\:;\:{x}>\mathrm{0}}\end{cases} \\ $$$${if}\:{f}\left({x}\right)\:{is}\:{one}−{one}\:{then}\:{m}\:{lies}\: \\ $$$${in}\:{interval}\: \\ $$$$\left({a}\right)\:\left(−\infty,\mathrm{0}\:\right)\:\:\:\:\:\left({c}\right)\:\left(\mathrm{0},\infty\right) \\ $$$$\left({b}\right)\:\left(−\infty,\:\mathrm{0}\:\right]\:\:\:\:\:\left({d}\right)\:\left[\:\mathrm{0},\:\infty\:\right)\: \\ $$ Terms of…
Question Number 57422 by Abdo msup. last updated on 03/Apr/19 $${let}\:{U}_{{n}} ={n}\:\int_{\mathrm{1}} ^{\pi} \:\frac{{sinx}}{{x}^{{n}} }{dx} \\ $$$${calculate}\:{lim}_{{n}\rightarrow+\infty} \:{U}_{{n}} \\ $$ Terms of Service Privacy Policy…
Question Number 57416 by Abdo msup. last updated on 03/Apr/19 $${let}\:{f}\left({x}\right)=\int_{\mathrm{2}{x}} ^{\mathrm{4}{x}} \:\:\:\:\frac{{dt}}{{t}^{\mathrm{2}} −\mathrm{2}{t}\:+\mathrm{3}} \\ $$$$\left.\mathrm{1}\right){find}\:{f}\left({x}\right) \\ $$$$\left.\mathrm{2}\right)\:{calculate}\:{lim}_{{x}\rightarrow\mathrm{0}} {f}\left({x}\right)\:{and}\:{lim}_{{x}\rightarrow+\infty} {f}\left({x}\right) \\ $$ Commented by maxmathsup…
Question Number 57413 by Abdo msup. last updated on 03/Apr/19 $${prove}\:{that}\:{ln}\left(\mathrm{1}+{x}\right)>\frac{{arctanx}}{\mathrm{1}+{x}}\:\:\forall{x}>\mathrm{0} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 57414 by Abdo msup. last updated on 03/Apr/19 $${solve}\:\:{y}'\:=\mathrm{2}{y}^{\mathrm{2}} \:+{y}\:\:\:{and}\:{y}\left({o}\right)=\mathrm{1} \\ $$ Commented by kaivan.ahmadi last updated on 03/Apr/19 $${first}\:{we}\:{notice}\:{the}\:{integral} \\ $$$$\int\frac{{dx}}{\mathrm{2}{x}^{\mathrm{2}} +{x}}=\int\frac{{dx}}{{x}\left(\mathrm{2}{x}+\mathrm{1}\right)}=…
Question Number 57411 by Abdo msup. last updated on 03/Apr/19 $${let}\:{f}\left({x}\right)={arctan}\left(\sqrt{{x}}+\sqrt{{x}+\mathrm{1}}\right) \\ $$$${find}\:{f}^{−\mathrm{1}} \left({x}\right)\:. \\ $$ Commented by maxmathsup by imad last updated on 04/Apr/19…
Question Number 57412 by Abdo msup. last updated on 03/Apr/19 $${let}\:{u}_{{n}} =\mathrm{1}\:+\frac{\mathrm{1}}{\:\sqrt{\mathrm{2}}}\:+\frac{\mathrm{1}}{\:\sqrt{\mathrm{3}}}\:+…+\frac{\mathrm{1}}{\:\sqrt{{n}}} \\ $$$${prove}\:{that}\:\left({u}_{{n}} \right)\:{is}\:{divdrgente}. \\ $$ Commented by maxmathsup by imad last updated on…