Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:50Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 7 4 ; 4 8 | = 40
46K
det| 5 9 ; 7 6 | = -33
468K
CaCO₃ → CaO + CO₂
det| 10 7 ; 3 11 | = 89
289K
e^{i\pi} + 1 = 0
det| 5 3 ; 7 6 | = 9
177K
∂x/∂r = 4x
∑_{k=1}^{n} k = n(n+1)/2
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 12 1 ; 5 13 | = 151
399K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
det| 12 4 ; 4 13 | = 140
\frac{4}{5} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2