Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 03:52Z
∇ × E = −∂B/∂t
\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
\lim_{x\to 0} \frac{\sin x}{x} = 1
det| 9 4 ; 1 10 | = 86
224K
∑_{k=1}^{n} k = n(n+1)/2
234K
\binom{n}{k} = \frac{n!}{k!(n-k)!}