Zdroj TeX:

\small \overrightarrow{AB} = B − A = (−9, 0, 0, 0); \overrightarrow{AC}= (4, 7, −2, 1);\overrightarrow{AD} = (1, −14, 4, −2); \overrightarrow{AE}= (−5, 7, −2, 1)