Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:05Z
4y² + 8y + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
46K
∑_{k=1}^{n} k = n(n+1)/2
468K
2H₂ + O₂ → 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
278K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 4 4 ; 2 5 | = 12
177K
iħ ∂ψ/∂t = Ĥψ
det| 6 1 ; 5 7 | = 37
358K
∑_{k=1}^{n} k = n(n+1)/2
121K
CaCO₃ → CaO + CO₂
det| 9 4 ; 1 10 | = 86
399K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
316K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
11K
∑_{k=1}^{n} k = n(n+1)/2
387K
det| 9 5 ; 2 10 | = 80
67K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
97K
det| 8 4 ; 7 9 | = 44
346K