Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:33Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
det| 9 5 ; 1 10 | = 85
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ω = 2πf
\lim_{r\to 0} \frac{\sin r}{r} = 1
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det| 1 7 ; 1 2 | = -5
\frac{4}{9} \sum_{i=1}^{n} i^{2}
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\frac{8}{6} \sum_{i=1}^{n} i^{2}
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∑_{k=1}^{n} k = n(n+1)/2
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det| 7 4 ; 4 8 | = 40
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\lim_{α\to 0} \frac{\sin α}{α} = 1
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