Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:12Z
∑_{k=1}^{n} k = n(n+1)/2
3x² + 3x + 6 = 0
∇²t = 0
∑_{k=1}^{n} k = n(n+1)/2
86K
7z² + 2z + 0 = 0
∑_{k=1}^{n} k = n(n+1)/2
234K
det| 2 8 ; 7 3 | = -50
218K
det| 7 4 ; 4 8 | = 40
354K
det| 8 9 ; 4 9 | = 36
70K