3. (5+5 points) (a) Let ICS(P), 41,...,n,0 S(P). Show that if T +41,142,...,Sn and 41,..., An E 0, then IF 0. Apply this to show that if I, 60 and TF4, then re. 3. (5+5 points) (a) Let ICS(P), 41,...,n,0 S(P). Show that if T +41,142,...,Sn and 41,..., An E 0, then IF 0. Apply this to show that if I, 60 and TF4, then re