Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:36Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
46K
det| 9 5 ; 1 10 | = 85
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
det| 5 2 ; 3 6 | = 24
289K
∂x/∂θ = 8x
Fe₂O₃ + 3CO → 2Fe + 3CO₂
177K