questions below:

Let W be a subspace spanned by the u's, and write y as the sum of a vector in W and a vector orthogonal to W. 6 4 0 y = U2 6 0 2 1 . . . y= (Type an integer or simplified fraction for each matrix element.)Compute the least-squares error associated with the least-squares solution x of Ax = b. 1 - 4 4 403 1 4 365 A = b= X= 0 2 - 5 113 5 6 4 365 . . . The least-squares error is (Type an exact answer, using radicals as needed.)1 10 Let y = 9 and W = Span fu,) . Complete parts (a) and (b) below. 3 /10 . . . a. Let U be the 2 x 1 matrix whose only column is u, . Compute UTU and UUT. UTU= UUT = (Simplify your answers.) b. Compute projwy and (UUT) y. projwy = (UUT) y - (Simplify your answers.)