Question Number 142623 by Engr_Jidda last updated on 03/Jun/21 $${find}\:{the}\:{zero}\:{of}\:{z}^{\mathrm{3}} +\mathrm{729}=\mathrm{0} \\ $$$${z}\in\mathbb{C} \\ $$ Answered by Olaf_Thorendsen last updated on 03/Jun/21 $${z}^{\mathrm{3}} \:=\:−\mathrm{729}\:=\:\mathrm{9}^{\mathrm{3}} {e}^{{i}\pi}…
Question Number 142622 by Engr_Jidda last updated on 03/Jun/21 $${find}\:{z}\:{for}\:{which}\:{f}\left({z}\right)=\frac{{z}}{{sinz}}\:{is}\:{undefined} \\ $$$${where}\:{z}\in\mathbb{C} \\ $$ Answered by MJS_new last updated on 03/Jun/21 $$\mathrm{undefined}\:\mathrm{when}\:\mathrm{sin}\:{z}\:=\mathrm{0}\:\Rightarrow\:{z}={n}\pi\wedge{n}\in\mathbb{Z} \\ $$ Terms…
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Question Number 11050 by lepan last updated on 09/Mar/17 $${The}\:{function}\:{f}\left({x}\right)={acosx}+{b}\:{where} \\ $$$${a}<\mathrm{0}\:{has}\:{a}\:{maximum}\:{value}\:{of}\:\mathrm{8}\:{and} \\ $$$${a}\:{minimum}\:{value}\:{of}\:−\mathrm{2}.\boldsymbol{{F}}{ind}\:{a}+{b}. \\ $$$$ \\ $$$$ \\ $$$$ \\ $$ Answered by Mahmoud…
Question Number 142079 by rs4089 last updated on 26/May/21 $${y}=\frac{{dy}}{{dx}}+\frac{{d}^{\mathrm{2}} {y}}{{dx}^{\mathrm{2}} }+\frac{{d}^{\mathrm{3}} {y}}{{dx}^{\mathrm{3}} }+….. \\ $$$${solve}\:{this}\:{diffrential}\:{equation} \\ $$ Answered by Dwaipayan Shikari last updated on…
Question Number 141849 by iloveisrael last updated on 24/May/21 $$\:\:\:\:\:{y}''−\mathrm{6}{y}'+\mathrm{9}{y}\:=\:\mathrm{9}{x}^{\mathrm{2}} \:{e}^{\mathrm{3}{x}} \:\mathrm{cos}\:\left(\mathrm{3}{x}\right)\:\: \\ $$ Answered by qaz last updated on 24/May/21 $${y}''−\mathrm{6}{y}'+\mathrm{9}{y}=\mathrm{9}{x}^{\mathrm{2}} {e}^{\mathrm{3}{x}} \mathrm{cos}\:\left(\mathrm{3}{x}\right) \\…
Question Number 10768 by 2525 last updated on 24/Feb/17 $$\mathrm{Solve}\:\mathrm{the}\:\mathrm{following}\:\mathrm{differential}\:\mathrm{equations}\: \\ $$$$\mathrm{by}\:\mathrm{power}\:\mathrm{series}. \\ $$$${y}^{//} −\mathrm{2}{y}\:=\:\mathrm{4}{x}^{\mathrm{2}} {e}^{{x}^{\mathrm{2}} } \\ $$ Commented by 2525 last updated on…
Question Number 141635 by learner001 last updated on 21/May/21 $${solve}\:{the}\:{differential}\:{equation}\:\left({PDE}\right), \\ $$$${z}\left(\frac{\partial{z}}{\partial{x}}−\frac{\partial{z}}{\partial{y}}\right)={z}^{\mathrm{2}} +\left({x}+{y}\right)^{\mathrm{2}} . \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 10553 by shiv ram last updated on 17/Feb/17 $$\left(\mathrm{D}^{\mathrm{2}} +\mathrm{4}\right)\mathrm{y}=\mathrm{tan}\:\mathrm{2x}\:\:\:\:\:\:\:\:\:\:\:\mathrm{D}=\mathrm{d}/\mathrm{dx} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 10512 by shiv ram last updated on 15/Feb/17 $$\mathrm{find}\:\mathrm{C}.\mathrm{I}.\:\mathrm{and}\:\:\mathrm{P}.\mathrm{I}.\:\mathrm{of}\:\mathrm{differential}\:\mathrm{equations}\:. \\ $$$$\frac{\mathrm{d}^{\mathrm{2}} \mathrm{y}}{\mathrm{dx}^{\mathrm{2}} }\:+\mathrm{4y}=\mathrm{tan}\:\mathrm{2x}. \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com