设两个非零向量e1`e2不共线,如果向量AB=e1+e2,向量BC=2e1+8e1,向量CD=3(e1-e2) 1,求证:A B D共线; 2,试确定实数K,使ke1+e2和e1+ke2共线
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![设两个非零向量e1`e2不共线,如果向量AB=e1+e2,向量BC=2e1+8e1,向量CD=3(e1-e2) 1,求证:A B D共线; 2,试确定实数K,使ke1+e2和e1+ke2共线](/uploads/image/z/6848717-5-7.jpg?t=%E8%AE%BE%E4%B8%A4%E4%B8%AA%E9%9D%9E%E9%9B%B6%E5%90%91%E9%87%8Fe1%60e2%E4%B8%8D%E5%85%B1%E7%BA%BF%2C%E5%A6%82%E6%9E%9C%E5%90%91%E9%87%8FAB%3De1%2Be2%2C%E5%90%91%E9%87%8FBC%3D2e1%2B8e1%2C%E5%90%91%E9%87%8FCD%3D3%28e1-e2%29+1%2C%E6%B1%82%E8%AF%81%EF%BC%9AA+B+D%E5%85%B1%E7%BA%BF%EF%BC%9B+2%2C%E8%AF%95%E7%A1%AE%E5%AE%9A%E5%AE%9E%E6%95%B0K%2C%E4%BD%BFke1%2Be2%E5%92%8Ce1%2Bke2%E5%85%B1%E7%BA%BF)
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