Images 4X 2X 2Y

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4x 2x 2y. Конус x^2+y^2=z^2. X^2+Y^2+Z^2=A^2. Z=X^2y^2/x^2+y^2. Поверхность x 2 y 2 z 2.
Конус x^2+y^2=z^2. X^2+Y^2+Z^2=A^2. Z=X^2y^2/x^2+y^2. Поверхность x 2 y 2 z 2.

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