Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:53Z
∑_{k=1}^{n} k = n(n+1)/2
3x² + 3x + 6 = 0
det| 4 8 ; 3 5 | = -4
371K
∇²t = 0
det| 7 4 ; 4 8 | = 40
86K
7z² + 2z + 0 = 0
det| 3 7 ; 2 4 | = -2
224K
det| 4 2 ; 5 5 | = 10
∑_{k=1}^{n} k = n(n+1)/2
218K
∫₀^∞ e^(-θ²) dθ = √π / 2
354K