Q:suppose w1 and w2 be subspaces of R^4 spanned by {(1,2,3,4),(2,1,1,2)} and{(1,0,1,0),(3,0,1,0)} respectively.find a basis of w1intersection w2.also find a basis of w1+w2 containing{(1,0,1,0),(3,0,1,0)}?