moi moi nguoi lam ho minh!!
( a, cho tamgiac ABC xac dinh D thao man ;vectoDB-3vectoDC=vecto Ob, cho M bat ki vectoMN=vectoMB-vecto3 MC .chung minh vecto MN di qua 1 diem bat ki
(moi nguoi lam giup em phan b thoi)
Vec-tơ
moi moi nguoi lam ho minh!!
cho M bat ki vectoMN=vectoMB-vecto3 MC .chung minh vecto MN di qua 1 diem bat ki
Vec-tơ
moi moi nguoi lam ho minh!!
( a, cho tamgiac ABC xac dinh D thao man ;vectoDB-3vectoDC=vecto Ob, cho M bat ki vectoMN=vectoMB-vecto3 MC .chung minh vecto MN di qua 1 diem bat ki
(moi nguoi lam giup em phan b thoi)
Vec-tơ