Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:39Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
479K
\oint_C \vec{F}\cdot d\vec{r} = 0
\oint_C \vec{F}\cdot d\vec{r} = 0
276K
det| 9 4 ; 1 10 | = 86
129K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\lim_{α\to 0} \frac{\sin α}{α} = 1
\oint_C \vec{F}\cdot d\vec{r} = 0
1K
det| 7 9 ; 1 8 | = 47
153K
\frac{10}{1} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
F = G m₁m₂ / r²
2H₂ + O₂ → 2H₂O
det| 2 5 ; 6 3 | = -24