Let V be a
set of
vectors. An
element v, belonging to V, is said to
linearly
dependent if it can be expressed as a
linear combination of the remaining vectors in V.
Ie. Let V={(2,1,1), (0,1,1), (1,0,0)}
v=(2,1,1) is linearly dependent upon (0,1,1) and (1,0,0)
because (2,1,1) = (0,1,1) + 2*(1,0,0)