Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:03Z
d/dn [n^4] = 4n^3
∑_{k=1}^{n} k = n(n+1)/2
385K
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
163K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
259K
iħ ∂ψ/∂t = Ĥψ
∫₀^∞ e^(-θ²) dθ = √π / 2
305K
\frac{2}{4} \sum_{i=1}^{n} i^{2}
det| 5 3 ; 7 6 | = 9
293K
det| 4 7 ; 2 5 | = 6
110K
det| 5 7 ; 5 6 | = -5
det| 7 4 ; 4 8 | = 40
300K
det| 12 9 ; 4 13 | = 120
Fe₂O₃ + 3CO → 2Fe + 3CO₂
iħ ∂ψ/∂t = Ĥψ
2r² + 6r + 7 = 0
5θ² + 9θ + 7 = 0