Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:05Z
4y² + 8y + 1 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
46K
2H₂ + O₂ → 2H₂O
\frac{10}{5} \sum_{i=1}^{n} i^{2}
289K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 4 3 ; 6 5 | = 2
339K
iħ ∂ψ/∂t = Ĥψ
det| 11 2 ; 2 12 | = 128
121K
CaCO₃ → CaO + CO₂
AgNO₃ + NaCl → AgCl↓ + NaNO₃
67K
det| 4 5 ; 2 5 | = 10
338K
det| 5 8 ; 4 6 | = -2
276K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
346K
∑_{k=1}^{n} k = n(n+1)/2
256K