Write x as the sum of two vectors, one in Span {u1 ,u2,u3} and one in Span {u4}. Assume that {u1 ,...,u4} is an orthogonal basis for R4 0 3 1 5 15 1 5 0 _3 _8 u, = U, = U, = U, = X= Vlog 28 1% | -1 5 1 1 4 1 0 T x = (Type an integer or simplified fraction for each matrix element.)