几何向量,线性约束条件,指数运算.说已知P是△ABC内一点,且满足(向量)PA+2PB+3PC=0,记△ABP、△BCP、△ACP的面积依次为S1、S2、S3,则S1:S2:S3等于?由(向量)PA+2PB+3PC=0,得(向量)PA+PC=-2(PB+PC)
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![几何向量,线性约束条件,指数运算.说已知P是△ABC内一点,且满足(向量)PA+2PB+3PC=0,记△ABP、△BCP、△ACP的面积依次为S1、S2、S3,则S1:S2:S3等于?由(向量)PA+2PB+3PC=0,得(向量)PA+PC=-2(PB+PC)](/uploads/image/z/954399-39-9.jpg?t=%E5%87%A0%E4%BD%95%E5%90%91%E9%87%8F%2C%E7%BA%BF%E6%80%A7%E7%BA%A6%E6%9D%9F%E6%9D%A1%E4%BB%B6%2C%E6%8C%87%E6%95%B0%E8%BF%90%E7%AE%97.%E8%AF%B4%E5%B7%B2%E7%9F%A5P%E6%98%AF%E2%96%B3ABC%E5%86%85%E4%B8%80%E7%82%B9%2C%E4%B8%94%E6%BB%A1%E8%B6%B3%EF%BC%88%E5%90%91%E9%87%8F%EF%BC%89PA%2B2PB%2B3PC%3D0%2C%E8%AE%B0%E2%96%B3ABP%E3%80%81%E2%96%B3BCP%E3%80%81%E2%96%B3ACP%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%BE%9D%E6%AC%A1%E4%B8%BAS1%E3%80%81S2%E3%80%81S3%2C%E5%88%99S1%EF%BC%9AS2%EF%BC%9AS3%E7%AD%89%E4%BA%8E%3F%E7%94%B1%EF%BC%88%E5%90%91%E9%87%8F%EF%BC%89PA%2B2PB%2B3PC%3D0%2C%E5%BE%97%EF%BC%88%E5%90%91%E9%87%8F%EF%BC%89PA%2BPC%3D-2%EF%BC%88PB%2BPC%EF%BC%89)
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