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2018-04-11 · 知道合伙人教育行家
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(1)(x-2)/9 = (y+3)/-4 = (z-5)/2
(2)(x-3)/(3-3) = (y-4)/(-2-4) = (z+4)/(2+4)
(3)方向向量 v=(2,-1,-3)×(1,2,-5)=(11,7,5),
(x-1)/11 = (y-1)/7 = (z-1)/5
(2)(x-3)/(3-3) = (y-4)/(-2-4) = (z+4)/(2+4)
(3)方向向量 v=(2,-1,-3)×(1,2,-5)=(11,7,5),
(x-1)/11 = (y-1)/7 = (z-1)/5
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