tmohs11tdos

f_{1}(x) = x,f_{n+1}=n \left(\int_{0}^{x} f(t)\,dt - x \int_{0}^{1} f_{n}(t)\,dt \right)\Rightarrow f_{n}(m) = \Sum_{k=0}^{m-1}k^{n-1}

Japan更新于 2026/10/20 13:28