Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:12Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{7} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
\frac{12}{6} \sum_{i=1}^{n} i^{2}
255K
\lim_{t\to 0} \frac{\sin t}{t} = 1
173K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
329K
\frac{8}{7} \sum_{i=1}^{n} i^{2}
368K