Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 23:07Z
∑_{k=1}^{n} k = n(n+1)/2
det| 4 1 ; 4 5 | = 16
∑_{k=1}^{n} k = n(n+1)/2
144K
∫₀^∞ e^(-x²) dx = √π / 2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
234K
\frac{9}{4} \sum_{i=1}^{n} i^{2}
det| 7 4 ; 4 8 | = 40
218K
F = G m₁m₂ / r²
∫₀^∞ e^(-α²) dα = √π / 2