Question

Prove that vectors u , v and w are coplanar if and only if vectors u , v and w are linearly dependent.

Step by step please

Answer 1

hint
if the vectors are coplanar then there exist (non zero value )scalars s and t such that
w=s u +t v
s u +t v +(-1) w =0
and the since the at least one of s,t ,-1 not 0 they are linearly dependent ...