Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:04Z
4y² + 8y + 1 = 0
\frac{6}{3} \sum_{i=1}^{n} i^{2}
468K
2H₂ + O₂ → 2H₂O
\frac{10}{7} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
339K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
399K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
316K
∑_{k=1}^{n} k = n(n+1)/2
11K
\lim_{t\to 0} \frac{\sin t}{t} = 1
387K
CH₄ + 2O₂ → CO₂ + 2H₂O
144K
det| 8 6 ; 1 9 | = 66
97K
det| 12 4 ; 3 13 | = 144
338K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
276K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
346K
det| 9 2 ; 7 10 | = 76
256K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
348K