Conic Command

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Conic[ <Point>, <Point>, <Point>, <Point>, <Point> ]
Returns a conic section through the five given points.
Note: If four of the points lie on one line the conic section is not defined.
Conic[ <Number>, <Number>, <Number>, <Number>, <Number>, <Number> ]
Returns a conic section a\cdot x^2+b\cdot y^2+c+d\cdot x\cdot y+e\cdot x+f\cdot y=0, where
Conic[ <Number>, <Number>, <Number>, <Number>, <Number>, <Number> ] = Conic[ a, b, c, d, e, f ].
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