Question Number 67102 by TawaTawa last updated on 22/Aug/19 Answered by mr W last updated on 23/Aug/19 Commented by mr W last updated on 23/Aug/19…
Question Number 1566 by 112358 last updated on 20/Aug/15 $${How}\:{does}\:{one}\:{use}\:{the}\:{following} \\ $$$${notation}?\:{It}'{s}\:{new}\:{to}\:{my}\: \\ $$$${understanding}\:{of}\:{using}\:{only} \\ $$$${one}\:{sigma}\:{sign}. \\ $$$${For}\:{e}.{g}\:\:\:\:\:\:\:\:\underset{{j}=\mathrm{1}} {\overset{{m}} {\sum}}\underset{{i}=\mathrm{1}} {\overset{{n}} {\sum}}\left({i}+\mathrm{1}\right)\left({j}−\mathrm{1}\right) \\ $$ Commented…
Question Number 132639 by Ahmed1hamouda last updated on 15/Feb/21 Commented by Ahmed1hamouda last updated on 15/Feb/21 $$\mathrm{solve}\:\mathrm{the}\:\mathrm{differential}\:\mathrm{equation} \\ $$ Answered by mathmax by abdo last…
Question Number 132633 by mohammad17 last updated on 15/Feb/21 $${find}\:{all}\:{value}\:{of}\:{z}\:{its}\:{saytisfies}\: \\ $$$$\frac{\mathrm{1}}{\mathrm{4}{z}−{z}^{\mathrm{3}} }=\frac{\mathrm{1}}{\mathrm{4}{z}}+\underset{{n}=\mathrm{0}} {\overset{\infty} {\sum}}\frac{{z}^{{n}} }{\mathrm{4}^{{n}+\mathrm{2}} } \\ $$ Answered by TheSupreme last updated on…
Question Number 132632 by mohammad17 last updated on 15/Feb/21 $${Solve}\:{the}\:{equation}\:{z}^{\mathrm{3}} ={z}_{°} \\ $$$${z}={x}+{iy}\:,{z}_{°} =\left({x}_{°} +{iy}_{°} \right) \\ $$ Answered by TheSupreme last updated on 15/Feb/21…
Question Number 132635 by mohammad17 last updated on 15/Feb/21 $${where}\:{is}\:{to}\:{be}\:{the}\:{function}\: \\ $$$${f}\left({z}\right)={zRez}+\overset{−} {{z}Imz}+\overset{−} {{z}}\:{diffrentable}\:{and} \\ $$$${find}\:{the}\:{dervaitive}? \\ $$ Commented by mohammad17 last updated on 16/Feb/21…
Question Number 1559 by 123456 last updated on 19/Aug/15 $$\mathrm{find}\:\mathrm{complex}\:\mathrm{number}\:\alpha,\beta\:\mathrm{such}\:\mathrm{that} \\ $$$$\alpha^{{n}} =\beta^{{m}} \\ $$$$\beta^{{u}} =\alpha^{{v}} \\ $$$${n},{m},{u},{v}\in\mathbb{Z} \\ $$$$\boldsymbol{{Q}}\mathrm{1498} \\ $$ Answered by Rasheed…
Question Number 1557 by 123456 last updated on 19/Aug/15 $$\mathrm{find}\:\alpha,\beta,\gamma\:\mathrm{such}\:\mathrm{that} \\ $$$$\alpha=\beta^{\mathrm{2}} \\ $$$$\beta^{\mathrm{3}} =\gamma^{\mathrm{4}} \\ $$$$\gamma^{\mathrm{5}} =\alpha^{\mathrm{6}} \\ $$ Commented by 123456 last updated…
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Question Number 132626 by mohammad17 last updated on 15/Feb/21 $${prove}\:{that}\:{Log}\left({z}_{\mathrm{1}} {z}_{\mathrm{2}} \right)={Logz}_{\mathrm{1}} +{Logz}_{\mathrm{2}} \\ $$$${with}\:{condition}\:−\pi<{Argz}_{\mathrm{1}} +{Argz}_{\mathrm{2}} <\pi \\ $$ Commented by mohammad17 last updated on…