Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:52Z
∑_{k=1}^{n} k = n(n+1)/2
3x² + 3x + 6 = 0
det| 2 3 ; 5 3 | = -9
371K
∇²t = 0
det| 12 6 ; 0 13 | = 156
259K
det| 7 7 ; 4 8 | = 28
86K
7z² + 2z + 0 = 0
det| 4 8 ; 3 5 | = -4
234K
det| 4 2 ; 5 5 | = 10
det| 7 4 ; 4 8 | = 40
218K
∫₀^∞ e^(-n²) dn = √π / 2
354K