数学选修2-1,已知点A(2,0,0),B(0,5,0),C(0,0,3),求平面ABC的单位法向量____上课溜号了,这个看答案是写出向量AB,AC的坐标,再设n(x,y,z)能列出两个三元一次方程,自己换一下全变0了
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![数学选修2-1,已知点A(2,0,0),B(0,5,0),C(0,0,3),求平面ABC的单位法向量____上课溜号了,这个看答案是写出向量AB,AC的坐标,再设n(x,y,z)能列出两个三元一次方程,自己换一下全变0了](/uploads/image/z/3783530-2-0.jpg?t=%E6%95%B0%E5%AD%A6%E9%80%89%E4%BF%AE2-1%2C%E5%B7%B2%E7%9F%A5%E7%82%B9A%282%2C0%2C0%29%2CB%280%2C5%2C0%29%2CC%280%2C0%2C3%EF%BC%89%2C%E6%B1%82%E5%B9%B3%E9%9D%A2ABC%E7%9A%84%E5%8D%95%E4%BD%8D%E6%B3%95%E5%90%91%E9%87%8F____%E4%B8%8A%E8%AF%BE%E6%BA%9C%E5%8F%B7%E4%BA%86%2C%E8%BF%99%E4%B8%AA%E7%9C%8B%E7%AD%94%E6%A1%88%E6%98%AF%E5%86%99%E5%87%BA%E5%90%91%E9%87%8FAB%2CAC%E7%9A%84%E5%9D%90%E6%A0%87%2C%E5%86%8D%E8%AE%BEn%EF%BC%88x%2Cy%2Cz%EF%BC%89%E8%83%BD%E5%88%97%E5%87%BA%E4%B8%A4%E4%B8%AA%E4%B8%89%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%2C%E8%87%AA%E5%B7%B1%E6%8D%A2%E4%B8%80%E4%B8%8B%E5%85%A8%E5%8F%980%E4%BA%86)
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