1.

Let F_(1)andF_(2) be the points (0,-4)and(0,4). The locus of the point P such that |PF_(1)|+|PF_(2)|=6 is :

Answer»

an ellipse
the SEGMENT `[F_(1)F_(2)]`
the st. line CONTAINING `F_(1)andF_(2)`
None of these

Answer :D


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