Question

Find the coordinate vector of v for the basis S={v1,v2,v3}:
a)v=(2,-1,3), v2=(1,0,0), v2=(2,2,0), v3=(3,3,3)

b)v=(5,-12,3), v1=(1,2,3), v2=(-4,5,6),v3=(7,-8,9)

c)What is the question actually asking?