Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:14Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
∑_{k=1}^{n} k = n(n+1)/2
46K
ω = 2πf
∑_{k=1}^{n} k = n(n+1)/2
289K
det| 3 7 ; 2 4 | = -2
278K
det| 1 7 ; 1 2 | = -5
det| 10 3 ; 4 11 | = 98
339K
det| 9 4 ; 1 10 | = 86
177K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
316K