Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:40Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
∑_{k=1}^{n} k = n(n+1)/2
339K
3φ² + 4φ + 2 = 0
det| 9 4 ; 1 10 | = 86
358K
det| 9 8 ; 3 10 | = 66
121K
∑_{k=1}^{n} k = n(n+1)/2
399K
∫₀^∞ e^(-x²) dx = √π / 2
387K