Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:03Z
∑_{k=1}^{n} k = n(n+1)/2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
446K
3x² + 3x + 6 = 0
∇²t = 0
det| 6 7 ; 0 7 | = 42
86K
7z² + 2z + 0 = 0
det| 4 2 ; 5 5 | = 10
∑_{k=1}^{n} k = n(n+1)/2
218K
det| 11 4 ; 5 12 | = 112
354K
2H₂ + O₂ → 2H₂O