11:. Let ( W ) be the set of all vectors of the form ( left[begin{array}{c}5 b+2 c b cend{array} ight] ), where

11:. Let \( W \) be the set of all vectors of the form \( \left[\begin{array}{c}5 b+2 c \\ b \\ c\end{array}\right] \), where \( b \) and \( c \) are arbitrary. Find vectors \( \mathbf{u} \) and \( \mathbf 2 answers