Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
168K
3x² + 3x + 6 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
371K
∇²t = 0
det| 5 6 ; 2 6 | = 18
259K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
86K
7z² + 2z + 0 = 0
det| 2 3 ; 5 3 | = -9
224K
det| 4 2 ; 5 5 | = 10
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
218K
det| 7 4 ; 4 8 | = 40
354K
2H₂ + O₂ → 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
70K
iħ ∂ψ/∂t = Ĥψ
\lim_{x\to 0} \frac{\sin x}{x} = 1
11θ² + 6θ + 7 = 0