0899132人目の素数さん垢版 | 大砲2018/11/19(月) 23:39:54.57ID:eL1RQpps >>897 (N+d) log(N+d) - (N+d) log(N) = -(N+d)log{N/(N+d)} = -(N+d) log{1 - d/(N+d)} ≧ -(N+d) {-d/(N+d)} = d,