Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:57Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
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ω = 2πf
det| 3 1 ; 7 4 | = 5
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det| 1 7 ; 1 2 | = -5
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∑_{k=1}^{n} k = n(n+1)/2
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
\oint_C \vec{F}\cdot d\vec{r} = 0
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det| 9 4 ; 1 10 | = 86
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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