Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 03:58Z
∇ × E = −∂B/∂t
∑_{k=1}^{n} k = n(n+1)/2
168K
\frac{4}{6} \sum_{i=1}^{n} i^{2}
446K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
371K
∂x/∂n = 6x
∑_{k=1}^{n} k = n(n+1)/2
259K
det| 7 4 ; 4 8 | = 40
86K
\lim_{x\to 0} \frac{\sin x}{x} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
354K
N₂ + 3H₂ ⇌ 2NH₃
det| 9 5 ; 1 10 | = 85
70K
d/dy [y^6] = 6y^5