Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:57Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
46K
det| 12 9 ; 5 13 | = 111
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
det| 10 2 ; 3 11 | = 104
339K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
177K
3φ² + 4φ + 2 = 0
det| 9 4 ; 1 10 | = 86
399K