﹙1／2＋1﹚[﹙1／2﹚²＋1][﹙1／2﹚的4次＋1][﹙1／2﹚的8次＋1]＋1帅哥美女们快答应呀

﹙1／2＋1﹚[﹙1／2﹚²＋1][﹙1／2﹚的4次＋1][﹙1／2﹚的8次＋1]＋1
帅哥美女们快答应呀

(1/2+1)*((1/2)^2+1)*((1/2)^4+1)*((1/2)^8+1)+1
= 1/ (1/2-1)*(1/2-1)(1/2+1)*((1/2)^2+1)*((1/2)^4+1)*((1/2)^8+1)+1
=1/ (1/2-1)*((1/2)^16-1)+1
=2(1-1/(2^16))+1
=3-(1/2)^15