Cassini Oval: Locus Relative to Foci

[size=150]For an ellipse, the [b]sum[/b] of the distances from the foci is constant. For a Cassini oval, the [b]product[/b] of the distances from the foci is constant.[/size]
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– I-Heng McComb

Información: Cassini Oval: Locus Relative to Foci