Images 4X4 12X2Y 9Y2

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4x4 12x2y 9y2. X2 a2 y2 b2 1 фигура. -X^2/A^2+Y^2/B^2 график. X^2/A^2+Y^2/B^2=1. X^2+Y^2=A^2.
X2 a2 y2 b2 1 фигура. -X^2/A^2+Y^2/B^2 график. X^2/A^2+Y^2/B^2=1. X^2+Y^2=A^2.

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