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calculus-x-y-z-R-and-x-2-y-2-z-2-1-find-min-x-y-z-R-yz-x-xz-y-xy-z-m-n-1970-




Question Number 116793 by mnjuly1970 last updated on 06/Oct/20
       ..calculus..    x,y,z ∈R^+   and  x^2 +y^2 +z^2  =1                   find            min_(x,y,z∈R^(+    ) ) ((((yz)/x)+((xz)/y)+((xy)/z)) )=?           m.n.1970..
$$\:\:\:\:\:\:\:..{calculus}.. \\ $$$$\:\:{x},{y},{z}\:\in\mathbb{R}^{+} \:\:{and}\:\:{x}^{\mathrm{2}} +{y}^{\mathrm{2}} +{z}^{\mathrm{2}} \:=\mathrm{1} \\ $$$$\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:{find}\:\:\:\:\:\: \\ $$$$\:\:\:\:{min}_{{x},{y},{z}\in\mathbb{R}^{+\:\:\:\:} } \left(\left(\frac{{yz}}{{x}}+\frac{{xz}}{{y}}+\frac{{xy}}{{z}}\right)\:\right)=? \\ $$$$ \\ $$$$\:\:\:\:\:\:\:{m}.{n}.\mathrm{1970}.. \\ $$

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