=;-H(a) Sizisi Recall that we have defined Int to be the set of integers greater than or equal to k. Let r e I, be some fixed value. Prove, formally, using inference rules, that pn 1 VnEN: n r 1 i=1 (b) An Prove, formally, using inference rules, that n pn 1 Vn EN:VT ET: Vr mi r i=1 (You can skip the algebraic steps, if they appeared in part 1. Or, you can answer just part b for full credit.) =;-H(a) Sizisi Recall that we have defined Int to be the set of integers greater than or equal to k. Let r e I, be some fixed value. Prove, formally, using inference rules, that pn 1 VnEN: n r 1 i=1 (b) An Prove, formally, using inference rules, that n pn 1 Vn EN:VT ET: Vr mi r i=1 (You can skip the algebraic steps, if they appeared in part 1. Or, you can answer just part b for full credit.)