Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:22Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
∑_{k=1}^{n} k = n(n+1)/2
46K
∫₀^∞ e^(-t²) dt = √π / 2
468K
ω = 2πf
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
289K
∑_{k=1}^{n} k = n(n+1)/2
278K
det| 1 7 ; 1 2 | = -5
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
339K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 7 4 ; 4 8 | = 40
121K
d/dn [n^1] = 1n^0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
316K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
11K