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[几何] 请各位几何研究者练练手

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1+1=? posted 2025-4-26 01:36 from mobile |Read mode
今有一圆锥曲线g,过定点A的直线交g于B,C二点,交A的极线于D点,从另一定点E作线束E(A,B,C,D)交A的极线于点列(F,G,H,D),再从AE上一定点I作线束I(D,G,F,H)交AB于点列(D,J,A,K).证明J,K二点的轨迹是与g共根轴的圆锥曲线.
1000092380.jpg
1+1=2吗?

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2025-7-23 19:37 GMT+8

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