Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 23:06Z
∑_{k=1}^{n} k = n(n+1)/2
det| 4 1 ; 4 5 | = 16
det| 9 4 ; 1 10 | = 86
144K
∑_{k=1}^{n} k = n(n+1)/2
371K
∫₀^∞ e^(-x²) dx = √π / 2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
259K
\oint_C \vec{F}\cdot d\vec{r} = 0
86K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{9}{4} \sum_{i=1}^{n} i^{2}
5β² + 5β + 3 = 0