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kienc3pt1
2 năm trước
Cho tam giác ABC,E là trung điểm BC,I là trung điểm AB.Gọi D,I,J,K lần lượt là các điểm thỏa mãn BE=2BD,AJ=1/2JC,IK=mIJ.Tìm m để A,K.D thằng hàng. Tất cả đều là vectơ ạ.GIúp vs mình vs ạ. Hứa vote đầy đủ ạ
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