Because, the condition says the distance from A to origin is twice from A to B, the points of A=-2.4 and B=-3.6, and A=-4 and B=-2 satisfied the condition. Even if it says that the distance from A to origin is twice that of from B to origin, the answer still is E, cause {-12,6} and {-4,-2} satisfied the condition.
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发表于 2004-1-13 06:31:00
