3Was ist ein Vektor? (2/2)

$\overrightarrow{\mathrm{a}}=\left(\begin{array}{c}2\\ 3\end{array}\right)\{\backslash overrightarrow\{\backslash mathrm\; a\}=\backslash begin\{pmatrix\}2\backslash \backslash 3\backslash end\{pmatrix\}\}$

$\overrightarrow{\mathrm{b}}=\left(\begin{array}{c}2\\ 3\\ 5\end{array}\right)\{\backslash overrightarrow\{\backslash mathrm\; b\}=\backslash begin\{pmatrix\}2\backslash \backslash 3\backslash \backslash 5\backslash end\{pmatrix\}\}$