When you think of a vector, many people probably call up Vector's definition (from Despicable Me). He says: It's a mathematical term. A quantity represented by an arrow with both direction and ...

If \(\overrightarrow {PQ} = \left( {\begin{array}{*{20}{c}} a\\ b\\ c \end{array}} \right)\) then the magnitude of \(\overrightarrow {PQ}\) is written as \(\left ...