Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-21 20:31Z
\lim_{r\to 0} \frac{\sin r}{r} = 1
∇ × E = −∂B/∂t
∑_{k=1}^{n} k = n(n+1)/2
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det| 7 4 ; 4 8 | = 40
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7x² + 5x + 2 = 0
det| 7 9 ; 1 8 | = 47
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λ = h/p
\frac{12}{6} \sum_{i=1}^{n} i^{2}
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∂α/∂r = 6α
∫₀^∞ e^(-x²) dx = √π / 2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\oint_C \vec{F}\cdot d\vec{r} = 0