Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 03:55Z
∇ × E = −∂B/∂t
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
∂x/∂n = 6x
\lim_{x\to 0} \frac{\sin x}{x} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
N₂ + 3H₂ ⇌ 2NH₃
∑_{k=1}^{n} k = n(n+1)/2
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