Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:16Z
∑_{k=1}^{n} k = n(n+1)/2
det| 10 2 ; 3 11 | = 104
465K
\frac{6}{7} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
119K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
152K
\lim_{α\to 0} \frac{\sin α}{α} = 1
255K
\oint_C \vec{F}\cdot d\vec{r} = 0
329K