Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 15:36Z
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
168K
∑_{k=1}^{n} k = n(n+1)/2
446K
det| 12 4 ; 1 13 | = 152
∑_{k=1}^{n} k = n(n+1)/2
371K
ΔS ≥ 0
\frac{8}{6} \sum_{i=1}^{n} i^{2}
259K
det| 7 4 ; 4 8 | = 40
86K
\oint_C \vec{F}\cdot d\vec{r} = 0
∑_{k=1}^{n} k = n(n+1)/2
234K
1x² + 9x + 5 = 0
det| 9 8 ; 3 10 | = 66
218K
det| 9 6 ; 7 10 | = 48
F = ma
ω = 2πf
12γ² + 7γ + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}