4. Let [a] Compute the inner product (1151. {h} Compute the outer product U = .5155, which is a 3 x 3 matrix. {'1."3~tifj-,ur that U is symmetric.} [1:] Compute U2. {:1} Compare your answer in part to] to H. [e] True or false: Suppose B is a square matrix. H 32 = 3, men 3 must be me identity matrix