Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:59Z
∑_{k=1}^{n} k = n(n+1)/2
det| 4 8 ; 3 5 | = -4
46K
∑_{k=1}^{n} k = n(n+1)/2
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
det| 9 4 ; 1 10 | = 86
339K
3φ² + 4φ + 2 = 0
5ω² + 6ω + 0 = 0