Condition for a Chord to Pass Through the Focus
For a chord joining parameters $$t_1,t_2$$ to pass through the focus:
$$t_1t_2=-1$$
Usage
- Used to identify focal chords through the parameter relation.
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Parabola
Condition for a Chord to Pass Through the Focus
Condition for a Chord to Pass Through the Focus
For a chord joining parameters $$t_1,t_2$$ to pass through the focus:
$$t_1t_2=-1$$
Usage
- Used to identify focal chords through the parameter relation.
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