Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 19:18Z
ω = 2πf
\binom{n}{k} = \frac{n!}{k!(n-k)!}
468K
3γ² + 9γ + 0 = 0
∑_{k=1}^{n} k = n(n+1)/2
289K
∑_{k=1}^{n} k = n(n+1)/2
278K
∂β/∂z = 1β
∑_{k=1}^{n} k = n(n+1)/2
177K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 11 4 ; 5 12 | = 112
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
121K
det| 10 3 ; 0 11 | = 110
det| 7 4 ; 4 8 | = 40
399K
\frac{7}{5} \sum_{i=1}^{n} i^{2}
d/dα [α^12] = 12α^11