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Lemniscate

${\displaystyle (x^{2}+y^{2})^{2}-2a^{2}(x^{2}-y^{2})=0}$, ${\displaystyle a=1}$

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Tibi licet:

• communicare – copiare, distribuere et committere hoc opus
• to remix – to adapt the work

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• attributio – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• aequa parte – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/2.0CC BY-SA 2.0 Creative Commons Attribution-Share Alike 2.0 truetrue