Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:58Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{4}{9} \sum_{i=1}^{n} i^{2}
46K
∑_{k=1}^{n} k = n(n+1)/2
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
339K
3φ² + 4φ + 2 = 0
\oint_C \vec{F}\cdot d\vec{r} = 0
358K
5ω² + 6ω + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
316K
∫₀^∞ e^(-θ²) dθ = √π / 2
det| 9 4 ; 1 10 | = 86
11K
∇²θ = 0