Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:54Z
∑_{k=1}^{n} k = n(n+1)/2
∫₀^∞ e^(-ω²) dω = √π / 2
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∑_{k=1}^{n} k = n(n+1)/2
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
det| 5 9 ; 7 6 | = -33
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det| 9 4 ; 1 10 | = 86
121K
det| 2 8 ; 7 3 | = -50
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∫₀^∞ e^(-t²) dt = √π / 2
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