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Cardioid (14th Feb)
Author:
Körtesi Péter
GeoGebra
We used the link
http://www-history.mcs.st-and.ac.uk/Curves/Cardioid.html
for the Cartesian equation of the cardioid curve: (
x
2
+
y
2
- 2
ax
)
2
= 4
a
2
(
x
2
+
y
2
)
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