Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 17:03Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
\frac{3}{2} \sum_{i=1}^{n} i^{2}
468K
iħ ∂ψ/∂t = Ĥψ
\frac{4}{9} \sum_{i=1}^{n} i^{2}
289K
det| 12 9 ; 5 13 | = 111
278K
3r² + 6r + 7 = 0
E = mc²
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
358K
det| 7 4 ; 4 8 | = 40
121K
CH₄ + 2O₂ → CO₂ + 2H₂O
det| 3 6 ; 1 4 | = 6
\frac{8}{7} \sum_{i=1}^{n} i^{2}
11K