(1) 向量OA=a (向量符号打不出来) 向量OB=b 向量AP=λPB 则向量OP= ( )(2)设P为三角形ABC内一点 且向量AP=2/5向量AB+1/5向量AC 则三角形ABP与三角形ABC面积之比为 ( )(3)在三角形ABC中已知A(4 1) B
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![(1) 向量OA=a (向量符号打不出来) 向量OB=b 向量AP=λPB 则向量OP= ( )(2)设P为三角形ABC内一点 且向量AP=2/5向量AB+1/5向量AC 则三角形ABP与三角形ABC面积之比为 ( )(3)在三角形ABC中已知A(4 1) B](/uploads/image/z/1581246-54-6.jpg?t=%EF%BC%881%EF%BC%89+%E5%90%91%E9%87%8FOA%3Da+%28%E5%90%91%E9%87%8F%E7%AC%A6%E5%8F%B7%E6%89%93%E4%B8%8D%E5%87%BA%E6%9D%A5%EF%BC%89+%E5%90%91%E9%87%8FOB%3Db+%E5%90%91%E9%87%8FAP%3D%CE%BBPB+%E5%88%99%E5%90%91%E9%87%8FOP%3D+%28+%29%282%29%E8%AE%BEP%E4%B8%BA%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E5%86%85%E4%B8%80%E7%82%B9+%E4%B8%94%E5%90%91%E9%87%8FAP%3D2%2F5%E5%90%91%E9%87%8FAB%2B1%2F5%E5%90%91%E9%87%8FAC+%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2ABP%E4%B8%8E%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E9%9D%A2%E7%A7%AF%E4%B9%8B%E6%AF%94%E4%B8%BA+%EF%BC%88+%EF%BC%89%EF%BC%883%EF%BC%89%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%E5%B7%B2%E7%9F%A5A%284+1%29+B)
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