Question Number 108406 by pticantor last updated on 16/Aug/20 $$ \\ $$$$ \\ $$$$\:\:\:\boldsymbol{{solve}}\:\boldsymbol{{the}}\:\boldsymbol{{differential}} \\ $$$$\boldsymbol{{equation}}\: \\ $$$$\boldsymbol{{y}}^{'} −\mathrm{2}{e}^{{x}} \boldsymbol{{y}}=\mathrm{2}{e}^{{x}} \sqrt{\boldsymbol{{y}}} \\ $$ Answered by…
Question Number 42316 by Raj Singh last updated on 23/Aug/18 Commented by Raj Singh last updated on 23/Aug/18 $${how}\:{x}=\mathrm{4}\:{y}=\mathrm{9} \\ $$ Commented by maxmathsup by…
Question Number 107320 by pticantor last updated on 10/Aug/20 $${let}\:{x},{y},{z}\:{be}\:{a}\:{complex}\:{numbers} \\ $$$${as}\:\mid{x}\mid=\mid{y}\mid=\mid{z}\mid=\mathrm{1} \\ $$$$\begin{cases}{{x}+{y}+{z}=\mathrm{1}}\\{{xyz}=\mathrm{1}}\end{cases} \\ $$$${calcul}\:\frac{\mathrm{1}}{{x}}+\frac{\mathrm{1}}{{y}}+\frac{\mathrm{1}}{{z}}=? \\ $$$$\:\:{x}=?\:{y}=?\:{z}=? \\ $$$${please}\:{i}\:{need}\:{a}\:{help} \\ $$ Commented by bemath…
Question Number 41388 by byaw last updated on 06/Aug/18 Commented by byaw last updated on 07/Aug/18 $${please}\:{help} \\ $$ Terms of Service Privacy Policy Contact:…
Question Number 106860 by Dwaipayan Shikari last updated on 07/Aug/20 $$\mathrm{1}−\mathrm{1}+\frac{\mathrm{5}}{\mathrm{9}}−\frac{\mathrm{7}}{\mathrm{27}}+\frac{\mathrm{9}}{\mathrm{81}}−\frac{\mathrm{11}}{\mathrm{243}}+….. \\ $$ Commented by Dwaipayan Shikari last updated on 07/Aug/20 $$\mathrm{1}−\frac{\mathrm{3}}{\mathrm{3}}+\frac{\mathrm{5}}{\mathrm{9}}−\frac{\mathrm{7}}{\mathrm{27}}+\frac{\mathrm{9}}{\mathrm{81}}−\frac{\mathrm{11}}{\mathrm{243}}+.. \\ $$$${S}=\mathrm{1}−\mathrm{3}{x}+\mathrm{5}{x}^{\mathrm{2}} −\mathrm{7}{x}^{\mathrm{3}}…
Question Number 104342 by bemath last updated on 21/Jul/20 $${solve}\:{x}\:\frac{{d}^{\mathrm{2}} {y}}{{dx}^{\mathrm{2}} }−\frac{{dy}}{{dx}}−\mathrm{4}{x}^{\mathrm{3}} {y}\:=\:\mathrm{8}{x}^{\mathrm{3}} \mathrm{sin}\left({x}^{\mathrm{2}} \right) \\ $$ Answered by bramlex last updated on 21/Jul/20 $${multiplying}\:{both}\:{sides}\:{by}\:{x}…
Question Number 104132 by bemath last updated on 19/Jul/20 $${what}\:{is}\:{the}\:{solution}\: \\ $$$${D}^{\mathrm{4}} {y}\:=\:\mathrm{12}{x}\:{by}\:{the}\:{variation}\: \\ $$$${of}\:{parameters}\: \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 103969 by bobhans last updated on 18/Jul/20 $${how}\:{do}\:{you}\:{solve}\:\left({D}^{\mathrm{3}} +\mathrm{12}{D}^{\mathrm{2}} +\mathrm{36}{D}\right){y}=\mathrm{0} \\ $$$${by}\:{constant}\:{coefficients} \\ $$ Answered by mr W last updated on 18/Jul/20 $$\lambda\left(\lambda+\mathrm{6}\right)^{\mathrm{2}}…
Question Number 103008 by bobhans last updated on 12/Jul/20 $$\frac{{dy}}{{dx}}\:−\:{y}.\mathrm{tan}\:{x}\:=\:{e}^{{x}} .\mathrm{sec}\:{x} \\ $$ Answered by bemath last updated on 12/Jul/20 $${IF}\:{u}\left({x}\right)\:=\:{e}^{−\int\:{tan}\:{x}\:{dx}\:} =\:{e}^{\int\:\frac{{d}\left({cos}\:{x}\right)}{{cos}\:{x}}} = \\ $$$$\mathrm{cos}\:{x}.\:\Leftrightarrow\mathrm{cos}\:{x}\:\frac{{dy}}{{dx}}\:−{y}.\mathrm{sin}\:{x}\:=\:{e}^{{x}}…
Question Number 101303 by Dwaipayan Shikari last updated on 01/Jul/20 $${i}^{{i}^{{i}.\infty} } =? \\ $$ Commented by Dwaipayan Shikari last updated on 01/Jul/20 $${If}\:{there}\:{any}\:{possible}\:{solutions}? \\…