Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:08Z
d/dn [n^4] = 4n^3
∫₀^∞ e^(-x²) dx = √π / 2
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\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
∑_{k=1}^{n} k = n(n+1)/2
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iħ ∂ψ/∂t = Ĥψ
det| 7 4 ; 4 8 | = 40
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det| 12 2 ; 2 13 | = 152
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\frac{2}{4} \sum_{i=1}^{n} i^{2}
\frac{8}{7} \sum_{i=1}^{n} i^{2}
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\oint_C \vec{F}\cdot d\vec{r} = 0
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det| 2 7 ; 7 3 | = -43
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