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what-is-the-maximum-perimeter-of-a-parallelogram-ABCD-which-inscribed-the-ellipse-x-2-4-y-2-1-




Question Number 89270 by jagoll last updated on 16/Apr/20
what is the maximum   perimeter of a parallelogram   ABCD which inscribed the   ellipse (x^2 /4) + y^2  = 1 ?
$${what}\:{is}\:{the}\:{maximum}\: \\ $$$${perimeter}\:{of}\:{a}\:{parallelogram}\: \\ $$$${ABCD}\:{which}\:{inscribed}\:{the}\: \\ $$$${ellipse}\:\frac{{x}^{\mathrm{2}} }{\mathrm{4}}\:+\:{y}^{\mathrm{2}} \:=\:\mathrm{1}\:? \\ $$

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