Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:36Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
\frac{4}{6} \sum_{i=1}^{n} i^{2}
289K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
278K
∂x/∂θ = 8x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
339K
det| 7 6 ; 1 8 | = 50
177K
3φ² + 4φ + 2 = 0
\oint_C \vec{F}\cdot d\vec{r} = 0
121K
\frac{8}{7} \sum_{i=1}^{n} i^{2}
316K
det| 7 4 ; 4 8 | = 40
11K
∫₀^∞ e^(-α²) dα = √π / 2
387K