Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:04Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
168K
3x² + 3x + 6 = 0
det| 7 4 ; 4 8 | = 40
371K
∇²t = 0
det| 12 1 ; 5 13 | = 151
86K
7z² + 2z + 0 = 0
det| 4 2 ; 5 5 | = 10
det| 11 9 ; 0 12 | = 132
218K
det| 3 6 ; 0 4 | = 12
354K
2H₂ + O₂ → 2H₂O
CH₄ + 2O₂ → CO₂ + 2H₂O
70K
\lim_{x\to 0} \frac{\sin x}{x} = 1