Question Number 115830 by mohammad17 last updated on 28/Sep/20 $${create}\:{the}\:{differention}\:{equation}\:{from} \\ $$$${x}^{\mathrm{2}} +{y}^{\mathrm{2}} +\mathrm{2}{ax}+\mathrm{2}{by}+{c}=\mathrm{0} \\ $$ Commented by bemath last updated on 29/Sep/20 $$\Rightarrow{x}^{\mathrm{2}} +\mathrm{2}{ax}+{a}^{\mathrm{2}}…
Question Number 181360 by lapache last updated on 24/Nov/22 $${Calcul} \\ $$$$\underset{{k}=\mathrm{0}} {\overset{{n}} {\sum}}{k}\left(\frac{\mathrm{1}}{\mathrm{3}}\right)^{{k}} =… \\ $$ Answered by mahdipoor last updated on 24/Nov/22 $${way}\:\mathrm{2}:…
Question Number 115829 by mohammad17 last updated on 28/Sep/20 $${prove}\:{that}\:\left({y}−{c}\right)^{\mathrm{2}} ={cx}\:{its}\:{solution}\:{of}\:{the}\:{differention}\:{equation}\:\mathrm{4}{xy}^{''} +\mathrm{2}{xy}^{'} −{y}=\mathrm{0} \\ $$$$\left({m}.{o}\right) \\ $$ Answered by $@y@m last updated on 29/Sep/20 $${y}−{c}=\sqrt{{cx}}\:…
Question Number 115817 by A8;15: last updated on 28/Sep/20 Commented by Dwaipayan Shikari last updated on 28/Sep/20 $$\mathrm{Sorry},\:\mathrm{I}\:\:\mathrm{haven}'\mathrm{t}\:\mathrm{found}\:\mathrm{any}\:\mathrm{symmetry} \\ $$$$\mathrm{So}\:\mathrm{i}\:\mathrm{started}\:\mathrm{with}\:\mathrm{if}\:\mathrm{the}\:\mathrm{question}\:\mathrm{becomes}… \\ $$ Commented by Dwaipayan…
Question Number 115812 by mathdave last updated on 28/Sep/20 $${solve} \\ $$$$\underset{{x}\rightarrow\infty} {\mathrm{lim}}\left(\zeta\left({x}\right)−\mathrm{1}\right)^{\frac{\mathrm{1}}{{x}}} \\ $$ Commented by Dwaipayan Shikari last updated on 28/Sep/20 $$\mathrm{Is}\:\mathrm{it}\:\underset{{x}\rightarrow\infty} {\mathrm{lim}}\left(\zeta\left(\mathrm{x}\right)−\mathrm{1}\right)^{\frac{\mathrm{1}}{\mathrm{x}}}…
Question Number 115793 by ZiYangLee last updated on 28/Sep/20 $$\mathrm{Given}\:\mathrm{that}\:\underset{\backsim} {{p}}=\begin{pmatrix}{\:\:\mathrm{2}}\\{−\mathrm{3}}\end{pmatrix}\:,\:\underset{\backsim} {{q}}=\begin{pmatrix}{−\mathrm{4}}\\{\:\:\:{m}}\end{pmatrix}\:\mathrm{and}\:\underset{\backsim} {{r}}=\begin{pmatrix}{{n}}\\{\mathrm{4}}\end{pmatrix} \\ $$$$\mathrm{If}\:\underset{\backsim} {{p}}+\underset{\backsim} {{q}}−\underset{\backsim} {{r}}\:\mathrm{is}\:\mathrm{a}\:\mathrm{unit}\:\mathrm{vector},\:\mathrm{find}\:\mathrm{the}\:\mathrm{value} \\ $$$$\mathrm{of}\:{m}\:\mathrm{and}\:{n}. \\ $$ Answered by $@y@m…
Question Number 181323 by KONE last updated on 24/Nov/22 $$\begin{cases}{{U}_{\mathrm{0}} =\mathrm{1}\:{et}\:{U}_{\mathrm{1}} =\mathrm{2}}\\{{U}_{{n}+\mathrm{2}} =\sqrt{{U}_{{n}} {U}_{{n}+\mathrm{1}} }}\end{cases} \\ $$$${determiner}\:{le}\:{terme}\:{generale}\:{et}\:{sa}\:{nature} \\ $$$${besoin}\:{d}'{aide}\:{avp} \\ $$ Commented by KONE last…
Question Number 50239 by Pk1167156@gmail.com last updated on 15/Dec/18 Commented by Pk1167156@gmail.com last updated on 15/Dec/18 help soon ! Answered by mr W last updated on 15/Dec/18…
Question Number 50228 by Gulay last updated on 14/Dec/18 Commented by Gulay last updated on 15/Dec/18 $$\mathrm{Could}\:\mathrm{you}\:\mathrm{help}\:\mathrm{me}\:\mathrm{sir}? \\ $$ Commented by Gulay last updated on…
Question Number 50220 by Gulay last updated on 14/Dec/18 Commented by Gulay last updated on 14/Dec/18 $$\mathrm{ABC}=\mathrm{120} \\ $$$$\mathrm{Find}\:\mathrm{DBK}+\mathrm{KDC} \\ $$$$ \\ $$ Commented by…