1.3.2.1.1.1.2.2空间向量平行与垂直的坐标运算(简单平行运算)
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Earned Point(s): 0 of 0, (0) 1.3.2.1.1.1.2.2.001 向量\vec{a}=(1,0,2),\vec{b}=(-1,0,m),若\vec{a}\parallel\vec{b},则实数m的值为( ) 1.3.2.1.1.1.2.2.004 在空间直角坐标系中,向量\vec{a}=(-m,6,3),\vec{b}=(2,n,1),\vec{a}\parallel\vec{b}, 则m + n = 1.3.2.1.1.1.2.2.005 若向量\vec{a}=(1,0,2),\vec{b}=(2,x,y) ,且\vec{a}\parallel\vec{b},则|\vec{b}| = ( )
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