Quay lại đáp án

	2	sửa đáp án		Sửa 11-01-13 11:48 AM mackhue59 5 1
1: ta có :$\overrightarrow{AD} = \overrightarrow{b};$$\overrightarrow{O'O}=\overrightarrow{C'C}=-\overrightarrow{c};$$\overrightarrow{BA'}=\overrightarrow{c}-\overrightarrow{a} $$\overrightarrow{C'D'}=-\overrightarrow{a};$$\overrightarrow{O'M}=\overrightarrow{AB}\div 2+\overrightarrow{c}$ 1: ta có :$\overrightarrow{AD} = \overrightarrow{b};$$\overrightarrow{O'O}=\overrightarrow{C'C}=-\overrightarrow{c};$$\overrightarrow{BA'}=\overrightarrow{c}-\overrightarrow{a} $$\overrightarrow{C'D'}=-\overrightarrow{a};$$\overrightarrow{O'M}=\overrightarrow{AB}\div 2+\overrightarrow{c}$ 1: ta có :$\overrightarrow{AD} = \overrightarrow{b};$$\overrightarrow{O'O}=\overrightarrow{C'C}=-\overrightarrow{c};$$\overrightarrow{BA'}=\overrightarrow{c}-\overrightarrow{a} $$\overrightarrow{C'D'}=-\overrightarrow{a};$$\overrightarrow{O'M}=\overrightarrow{AB}\div 2+\overrightarrow{c}$

	1	tạo mới		Trả lời 10-01-13 11:36 PM nhutuyet12t7.1995 1
1: ta có :$\overrightarrow{AD} = \overrightarrow{b};$$\overrightarrow{O'O}=\overrightarrow{C'C}=-\overrightarrow{c};$$\overrightarrow{BA'}=\overrightarrow{c}-\overrightarrow{a} $$\overrightarrow{C'D'}=-\overrightarrow{a};$$\overrightarrow{O'M}=\overrightarrow{AB}\div 2+\overrightarrow{c}$

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