Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:06Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{8}{7} \sum_{i=1}^{n} i^{2}
446K
3x² + 3x + 6 = 0
\frac{3}{2} \sum_{i=1}^{n} i^{2}
144K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
371K
∇²t = 0
\frac{2}{2} \sum_{i=1}^{n} i^{2}
86K
7z² + 2z + 0 = 0
det| 4 2 ; 5 5 | = 10
∑_{k=1}^{n} k = n(n+1)/2
218K
2H₂ + O₂ → 2H₂O
det| 7 4 ; 4 8 | = 40
70K
\lim_{x\to 0} \frac{\sin x}{x} = 1