Trong không gian Oxyz, cho đường thẳng...

\)">d:\left\{ \begin{aligned}
& x=-1+2t \\
& y=-t \\
& z=-2+2t \\
\end{aligned} \right..\overrightarrow{{{u}_{\Delta }}}=\left[ \overrightarrow{{{u}_{d}}};\overrightarrow{{{n}_{p}}} \right]=\left[ -1;4;3 \right].\left( -1+2t \right)+\left( -t \right)-\left( -2+2t \right)+1=0\Leftrightarrow t=2\Rightarrow A\left( 3;-2;2 \right).A\left( 3;-2;2 \right)\overrightarrow{{{u}_{\Delta }}}=\left[ -1;4;3 \right]\left\{ \begin{aligned}
& x=3+t \\
& y=-2-4t \\
& z=2-3t \\
\end{aligned} \right..$