Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-18 00:14Z
\oint_C \vec{F}\cdot d\vec{r} = 0
∑_{k=1}^{n} k = n(n+1)/2
109K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
122K
det| 7 6 ; 5 8 | = 26
163K
det| 3 6 ; 0 4 | = 12
\lim_{t\to 0} \frac{\sin t}{t} = 1
250K
∑_{k=1}^{n} k = n(n+1)/2
352K
\frac{9}{4} \sum_{i=1}^{n} i^{2}
349K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
194K
det| 4 1 ; 6 5 | = 14
320K
∑_{k=1}^{n} k = n(n+1)/2
297K
det| 7 4 ; 4 8 | = 40
63K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
462K