Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:18Z
d/dn [n^4] = 4n^3
\frac{4}{9} \sum_{i=1}^{n} i^{2}
385K
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
iħ ∂ψ/∂t = Ĥψ
det| 9 6 ; 0 10 | = 90
57K
\frac{2}{4} \sum_{i=1}^{n} i^{2}
det| 7 9 ; 1 8 | = 47
293K
det| 5 7 ; 5 6 | = -5
∫₀^∞ e^(-ω²) dω = √π / 2
300K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
34K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
354K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
368K
2r² + 6r + 7 = 0