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giup minh voi cho $\triangle ABC$,duong trung tuyen $AH ; D,E,I$ la 3 diem thoa man $\overrightarrow{AD}=1/5\overrightarrow{AB} $; $\overrightarrow{EC}=1/2\overrightarrow{EB}$; $\overrightarrow{AI}=1/m \overrightarrow{AH}$. TIM m de $D,I,E$ thang hang Vec-tơ giup minh voi cho \triangleABC,duong trung tuyen AH ; D,E,I la 3 diem thoa man vctAD=1/5vctAB vctEC=1/2vctEB vctAI=1/m vctAH TIM m de D,I,E thang hang Vec-tơ giup minh voi cho $\triangle ABC$,duong trung tuyen $AH ; D,E,I$ la 3 diem thoa man $\overrightarrow{AD}=1/5\overrightarrow{AB} $; $\overrightarrow{EC}=1/2\overrightarrow{EB}$; $\overrightarrow{AI}=1/m \overrightarrow{AH}$. TIM m de $D,I,E$ thang hang Vec-tơ

	1	tạo mới		Hỏi 19-12-13 08:41 PM phanhoangsnow 1
giup minh voi cho \triangleABC,duong trung tuyen AH ; D,E,I la 3 diem thoa man vctAD=1/5vctAB vctEC=1/2vctEB vctAI=1/m vctAH TIM m de D,I,E thang hang

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