Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:05Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
446K
3x² + 3x + 6 = 0
\lim_{α\to 0} \frac{\sin α}{α} = 1
144K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
371K
∇²t = 0
\lim_{γ\to 0} \frac{\sin γ}{γ} = 1
259K
det| 7 6 ; 1 8 | = 50
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7z² + 2z + 0 = 0
\frac{4}{6} \sum_{i=1}^{n} i^{2}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 4 2 ; 5 5 | = 10
∑_{k=1}^{n} k = n(n+1)/2
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det| 9 4 ; 1 10 | = 86
354K
2H₂ + O₂ → 2H₂O
det| 12 1 ; 5 13 | = 151
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\lim_{x\to 0} \frac{\sin x}{x} = 1