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
75K
\oint_C \vec{F}\cdot d\vec{r} = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 11 9 ; 5 12 | = 87
191K
det| 12 1 ; 4 13 | = 152
390K
\lim_{α\to 0} \frac{\sin α}{α} = 1
det| 5 3 ; 7 6 | = 9
153K
\frac{10}{1} \sum_{i=1}^{n} i^{2}
det| 7 4 ; 4 8 | = 40
473K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
F = G m₁m₂ / r²
2H₂ + O₂ → 2H₂O
det| 2 5 ; 6 3 | = -24
\frac{2}{1} \sum_{i=1}^{n} i^{2}