Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:20Z
d/dn [n^4] = 4n^3
\oint_C \vec{F}\cdot d\vec{r} = 0
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\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
\lim_{t\to 0} \frac{\sin t}{t} = 1
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iħ ∂ψ/∂t = Ĥψ
det| 12 2 ; 2 13 | = 152
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\frac{2}{4} \sum_{i=1}^{n} i^{2}
\frac{8}{6} \sum_{i=1}^{n} i^{2}
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det| 5 7 ; 5 6 | = -5
det| 2 6 ; 0 3 | = 6
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det| 6 6 ; 5 7 | = 12
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
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