1.3.2.1.1.1.2.3空间向量平行与垂直的坐标运算(简单垂直运算)
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题 1 of 3
1. 题
1.3.2.1.1.1.2.3.001
若向量\vec{a}=(1,2,3)与\vec{b}=(1,x,3)垂直,则实数x的值
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为
正确不正确 -
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题 2 of 3
2. 题
1.3.2.1.1.1.2.3.002
已知\vec{a}=(1,-2,3),\vec{b}=(-4,x,2) ,且\vec{a}\perp\vec{b},则实数x的值为( )
正确不正确 -
题 3 of 3
3. 题
1.3.2.1.1.1.2.3.003
已知空间向量\vec{a}=(1,n,2),\vec{b}=(-3,1,3),若\vec{a}与\vec{b}垂直,则|\vec{a}| = ( )
正确不正确