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Condition for a Real Circle
For:
$$ x^2+y^2+2gx+2fy+c=0 $$
a real circle exists when:
$$ g^2+f^2-c>0 $$
Usage
- Used to check whether the equation represents a real circle with positive radius.
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Condition for a Real Circle
For:
$$ x^2+y^2+2gx+2fy+c=0 $$
a real circle exists when:
$$ g^2+f^2-c>0 $$
Usage
- Used to check whether the equation represents a real circle with positive radius.
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