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A point P moves on x-y plane such that PS +PS' = 4 where S(K,0) and S'(-K,0), then which of the following is not true about the locus of P? |
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Answer» ellipse if `K in (-2,2)` `:. PS + PS' gt SS'` `RARR K in (-2,2)` If PSS' is collinear, the pair of coincident lines `rarr K = +-2` If PSS' neither forms triangle nor collinear then empty set `rArr PS + PS^(1) lt SS^(1)` `rArr K in (-oo,-2) uu(2,oo)` |
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