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four focal points and directric circles
Author:
Walter Füchte
Topic:
Circle
,
Complex Numbers
,
Differential Equation
,
Parabola
,
Plane Figures or Shapes
,
Symmetry
GeoGebra
06.08.2023
Only for
:
implicit equation
of the curve
this is a
bicircular quartic
with
and
; with the
real function
.
Elliptic differential equation
for a
elliptic function
:
for a suitable
.
Solution curves
are
confocal
bicirkular quartics
. Link
elliptic functions & pencils of circles & bicircular quartics ...
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z`]]
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