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Het vlak $PQH$ wordt opgespannen door:
$
\overrightarrow {HP} = \left( {\begin{array}{*{20}c}
4\\
0\\
{-3}\\
\end{array}} \right)
$ en $
\overrightarrow {HQ} = \left( {\begin{array}{*{20}c}
0\\
2\\
{-1}\\
\end{array}} \right)
$
Bereken $
\overrightarrow {HP} \times \overrightarrow {HQ}
$=$
\left( {\begin{array}{*{20}c}
6\\
4\\
8\\
\end{array}} \right) \buildrel \wedge \over = \left( {\begin{array}{*{20}c}
3\\
2\\
4\\
\end{array}} \right)
$
$
k:\left( {\begin{array}{*{20}c}
x\\
y\\
z\\
\end{array}} \right) = \left( {\begin{array}{*{20}c}
0\\
4\\
0\\
\end{array}} \right) + \lambda \left( {\begin{array}{*{20}c}
3\\
2\\
4\\
\end{array}} \right)
$
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