Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:09Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
168K
det| 2 3 ; 5 3 | = -9
446K
3x² + 3x + 6 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
144K
det| 11 9 ; 0 12 | = 132
371K
∇²t = 0
∑_{k=1}^{n} k = n(n+1)/2
259K
7z² + 2z + 0 = 0
det| 7 4 ; 4 8 | = 40
224K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
234K
CH₄ + 2O₂ → CO₂ + 2H₂O
218K
det| 10 2 ; 3 11 | = 104
354K