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^(-z²) dz = √π / 2
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\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
∑_{k=1}^{n} k = n(n+1)/2
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det| 2 3 ; 5 3 | = -9
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3φ² + 4φ + 2 = 0
det| 3 7 ; 2 4 | = -2
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