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增分微练8圆锥曲线中的轨迹问题1.D[解析]设P(x,y),如图,连接CP,由线段MN的中点为P,得CP⊥MN,即CP⊥AP,所以⃗CP·⃗AP=0.因为A(-3,-4),C(3,4... 2026-05-17143439.35 KB6页99
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