
# test

$$\newcommand{\vectorA}[1]{\vec{#1}} % arrow$$

$$\newcommand{\vectorAt}[1]{\vec{\text{#1}}} % arrow$$

$$\newcommand{\vectorB}[1]{\overset {\rightharpoonup} #1 }$$

$$\newcommand{\vectorC}[1]{\textbf{#1}}$$

$$\newcommand{\vectorD}[1]{\overrightarrow{#1}}$$

$$\newcommand{\vectorDt}[1]{\overrightarrow{\text{#1}}}$$

$$\newcommand{\vect}[1]{\accentset{\rightharpoonup}{#1}}$$

$$\vectorA{AF}$$

$$\vectorAt{AF}$$

$$\vectorB{AF}$$

$$\vectorC{AF}$$

$$\vectorD{AF}$$

$$\vectorDt{AF}$$

$$\vect{12}$$