Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:56Z
∑_{k=1}^{n} k = n(n+1)/2
det| 12 9 ; 5 13 | = 111
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
det| 4 2 ; 6 5 | = 8
177K
3φ² + 4φ + 2 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
358K