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Category: Algebra

Q-179570-Posted-by-Infinityaction-30-10-2022-find-the-minimum-of-f-x-f-x-x-2-4-x-2-8x-12-x-25-x-2-4-x-2-16x-16-x-80-f-x-x-4-2-2-x-3-2-

Question Number 179717 by a.lgnaoui last updated on 01/Nov/22 $$\mathrm{Q}\:\mathrm{179570}\:\left({Posted}\:{by}\:\mathrm{Infinityaction}\:\mathrm{30}.\mathrm{10}.\mathrm{2022}\right) \\ $$$$\mathrm{find}\:\mathrm{the}\:\mathrm{minimum}\:\mathrm{of}\:\mathrm{f}\left(\mathrm{x}\right) \\ $$$$\mathrm{f}\left(\mathrm{x}\right)=\sqrt{\mathrm{x}^{\mathrm{2}} +\frac{\mathrm{4}}{\mathrm{x}^{\mathrm{2}} }−\mathrm{8x}−\frac{\mathrm{12}}{\mathrm{x}}+\mathrm{25}}\:+\sqrt{\mathrm{x}^{\mathrm{2}} +\frac{\mathrm{4}}{\mathrm{x}^{\mathrm{2}} }−\mathrm{16x}−\frac{\mathrm{16}}{{x}}+\mathrm{80}}\: \\ $$$$−−−−−−−−−−−−−−−−−− \\ $$$$\mathrm{f}\left(\mathrm{x}\right)=\sqrt{\left(\mathrm{x}−\mathrm{4}\right)^{\mathrm{2}} +\left(\frac{\mathrm{2}}{\mathrm{x}}−\mathrm{3}\right)^{\mathrm{2}} }\:\:+\sqrt{\left(\mathrm{x}−\mathrm{8}\right)^{\mathrm{2}} +\left(\frac{\mathrm{2}}{\mathrm{x}}−\mathrm{4}\right)^{\mathrm{2}}…

a-b-ab-4-then-a-b-

Question Number 179660 by mathlove last updated on 31/Oct/22 $$\frac{{a}+{b}}{\:\sqrt{{ab}}}=\mathrm{4}\:\:\:\:{then}\:{a}:{b}=? \\ $$ Answered by FelipeLz last updated on 31/Oct/22 $$\frac{{a}+{b}}{\:\sqrt{{ab}}}\:=\:\mathrm{4} \\ $$$$\frac{{a}^{\mathrm{2}} +\mathrm{2}{ab}+{b}^{\mathrm{2}} }{\:{ab}}\:=\:\mathrm{16} \\…

4-1-11-2-22-3-37-4-

Question Number 114110 by bemath last updated on 17/Sep/20 $$\frac{\mathrm{4}}{\mathrm{1}!}\:+\:\frac{\mathrm{11}}{\mathrm{2}!}\:+\:\frac{\mathrm{22}}{\mathrm{3}!}\:+\:\frac{\mathrm{37}}{\mathrm{4}!}\:+\:…\:=\:? \\ $$ Commented by Dwaipayan Shikari last updated on 17/Sep/20 $${y}\:\:\bigtriangleup{y}\:\bigtriangleup^{\mathrm{2}} {y} \\ $$$$\mathrm{4} \\…