n2w0iiand0i1FinallyweneedtoshowthatfT2SWehaveXi2fTwiW n2Xi2fTw0iiW n2 Xi2Twiw0 Xi2TiW n2 Xi2Tw0inwW n2Xi2Tw0isincewWnW n2n2sinceT2S0WThereforefT2S ID: 514169
n2(w0i+i);and0i1.Finally weneedtoshowthatf(T)2S.Wehave:Xi2f(T)wi=W n2Xi2f(T)(w0i+i)=W n2