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Focal Chord
A chord of the parabola passing through its focus is called a focal chord.
If its endpoints correspond to parameters $$t_1,t_2$$, then:
$$t_1t_2=-1$$
Usage
- Used to identify whether a chord is a focal chord.
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Focal Chord
A chord of the parabola passing through its focus is called a focal chord.
If its endpoints correspond to parameters $$t_1,t_2$$, then:
$$t_1t_2=-1$$
Usage
- Used to identify whether a chord is a focal chord.
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