- Kampyle of Eudoxus
of

:$x^4=x^2+y^2,,$

or, in

polar coordinates ,:$r=\; sec^2\; heta,.$

This quartic curve was studied by the Greek astronomer and mathematician

Eudoxus of Cnidus (c. 408 BC – c.347 BC) in relation to the classical problem ofdoubling the cube .**ee also***

List of curves **References***

**External links***

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