Vector; Direction Vector of the line

The GetDirection command obtains a direction vector of the line.

The direction vector is not necessarily simplified.

$\mathrm{with}\left(\mathrm{Student}\left[\mathrm{MultivariateCalculus}\right]\right)\:$

$\mathrm{l1}≔\mathrm{Line}\left(\left[3\,2\,1\right]\,⟨2\,-3\,5⟩\right)\:$

$\mathrm{GetPlot}\left(\mathrm{l1}\right)$

$\mathrm{GetRepresentation}\left(\mathrm{l1}\right)$

$t·\left[\begin{array}{c}2\\ \mathrm{-3}\\ 5\end{array}\right]+\left[\begin{array}{c}3\\ 2\\ 1\end{array}\right]$

$\mathrm{GetDirection}\left(\mathrm{l1}\right)$

$\left[\begin{array}{c}2\\ \mathrm{-3}\\ 5\end{array}\right]$

$\mathrm{l2}≔\mathrm{Line}\left(\left[2\,0\right]\,\left[0\,-4\right]\right)\:$

$\mathrm{GetPlot}\left(\mathrm{Line}\left(\left[2\,0\right]\,\left[0\,-4\right]\right)\right)$

$\mathrm{GetDirection}\left(\mathrm{l2}\right)$

$\left[\begin{array}{c}\mathrm{-2}\\ \mathrm{-4}\end{array}\right]$

The Student[MultivariateCalculus][GetDirection] command was introduced in Maple 17.

For more information on Maple 17 changes, see Updates in Maple 17.