Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 15:38Z
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 12 4 ; 1 13 | = 152
∑_{k=1}^{n} k = n(n+1)/2
371K
ΔS ≥ 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
259K
\frac{3}{2} \sum_{i=1}^{n} i^{2}
86K
\oint_C \vec{F}\cdot d\vec{r} = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
224K
det| 2 8 ; 7 3 | = -50
234K
det| 9 4 ; 1 10 | = 86
218K
\lim_{r\to 0} \frac{\sin r}{r} = 1
354K