Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:14Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
CaCO₃ → CaO + CO₂
Fe₂O₃ + 3CO → 2Fe + 3CO₂
289K
\oint_C \vec{F}\cdot d\vec{r} = 0
278K
e^{i\pi} + 1 = 0
\frac{4}{6} \sum_{i=1}^{n} i^{2}
177K
∂x/∂r = 4x
det| 7 7 ; 4 8 | = 28
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O