任意两个向量必然是共面的 非直线上3点确定一个平面
如果是共线向量 x=3
(x-1,4-3,6-2)=k(1--1,3-2,2--2)
已知向量a=(1,3,2) b=(-1,2,-2) c=(x,4,6)是共面向量,则实数x=
已知向量a=(1,3,2) b=(-1,2,-2) c=(x,4,6)是共面向量,则实数x=
数学人气:355 ℃时间:2020-04-05 03:16:46
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