Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:07Z
4y² + 8y + 1 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
46K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
468K
2H₂ + O₂ → 2H₂O
∫₀^∞ e^(-α²) dα = √π / 2
289K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 5 3 ; 2 6 | = 24
339K
det| 9 2 ; 7 10 | = 76
177K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
399K
det| 1 7 ; 7 2 | = -47
316K
det| 9 7 ; 3 10 | = 69
11K
\frac{7}{7} \sum_{i=1}^{n} i^{2}
97K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
338K
∑_{k=1}^{n} k = n(n+1)/2
276K
det| 4 8 ; 0 5 | = 20
346K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
256K