Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:20Z
d/dn [n^4] = 4n^3
∑_{k=1}^{n} k = n(n+1)/2
384K
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
\lim_{r\to 0} \frac{\sin r}{r} = 1
259K
iħ ∂ψ/∂t = Ĥψ
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
305K
\frac{2}{4} \sum_{i=1}^{n} i^{2}
det| 9 4 ; 1 10 | = 86
293K
det| 5 7 ; 5 6 | = -5
det| 3 7 ; 2 4 | = -2
300K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 9 6 ; 0 10 | = 90
354K