Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:23Z
∑_{k=1}^{n} k = n(n+1)/2
det| 11 5 ; 0 12 | = 132
75K
det| 11 4 ; 5 12 | = 112
479K
\oint_C \vec{F}\cdot d\vec{r} = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 3 7 ; 2 4 | = -2
191K
\lim_{α\to 0} \frac{\sin α}{α} = 1
\frac{12}{6} \sum_{i=1}^{n} i^{2}
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