Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:29Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
168K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
446K
3x² + 3x + 6 = 0
\lim_{r\to 0} \frac{\sin r}{r} = 1
371K
∇²t = 0
\frac{8}{6} \sum_{i=1}^{n} i^{2}
259K
det| 9 4 ; 1 10 | = 86
86K
7z² + 2z + 0 = 0
det| 1 4 ; 3 2 | = -10
224K
det| 4 2 ; 5 5 | = 10
∑_{k=1}^{n} k = n(n+1)/2
218K
11t² + 9t + 4 = 0
2H₂ + O₂ → 2H₂O
iħ ∂ψ/∂t = Ĥψ
\lim_{x\to 0} \frac{\sin x}{x} = 1