Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 03:58Z
∇ × E = −∂B/∂t
det| 7 4 ; 4 8 | = 40
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det| 1 4 ; 3 2 | = -10
446K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{2}{2} \sum_{i=1}^{n} i^{2}
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∑_{k=1}^{n} k = n(n+1)/2
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∂x/∂n = 6x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∑_{k=1}^{n} k = n(n+1)/2
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\lim_{x\to 0} \frac{\sin x}{x} = 1
\frac{8}{7} \sum_{i=1}^{n} i^{2}
224K