Category: Algebra

Question Number 105158 by bemath last updated on 26/Jul/20 $$\begin{cases}{{xy}+{x}+{y}\:=\:\mathrm{20}}\\{{x}^{\mathrm{2}} +{y}^{\mathrm{2}} \:=\:\mathrm{40}}\end{cases}{find}\:{x}\:{and}\:{y} \\ $$ Answered by Dwaipayan Shikari last updated on 26/Jul/20 $${xy}=\mathrm{20}−\left({x}+{y}\right) \\ $$$${x}^{\mathrm{2}}…

Question Number 105120 by Josias last updated on 26/Jul/20 $${f}\left(\mathrm{2}{f}\left({x}\right)+{f}\left({y}\right)\right)=\mathrm{2}{x}+{y}\:\:\:{f}:\mathbb{R}\rightarrow\mathbb{R} \\ $$$${f}\left({x}\right)=?\:\:\:\:{x},{y}\in\mathbb{R} \\ $$$$ \\ $$ Answered by SUMIT007 last updated on 26/Jul/20 $${f}\left({x}\right)={x}\:\:\:\:\mathrm{simple} \\…

Question Number 170627 by Diels last updated on 28/May/22 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 170623 by cortano1 last updated on 27/May/22 Answered by greougoury555 last updated on 28/May/22 $${d}=\sqrt{{x}^{\mathrm{2}} +\mathrm{81}}\:+\sqrt{\left({x}−\mathrm{5}\right)^{\mathrm{2}} +\mathrm{36}} \\ $$$${d}'=\frac{{x}}{\:\sqrt{{x}^{\mathrm{2}} +\mathrm{81}}}\:+\frac{{x}−\mathrm{5}}{\:\sqrt{\left({x}−\mathrm{5}\right)^{\mathrm{2}} +\mathrm{36}}}\:=\mathrm{0} \\ $$$$\Rightarrow\frac{{x}}{\:\sqrt{{x}^{\mathrm{2}}…

Question Number 39524 by bshahid010@gmail.com last updated on 07/Jul/18 Terms of Service Privacy Policy Contact: info@tinkutara.com