Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:43Z
∑_{k=1}^{n} k = n(n+1)/2
det| 10 2 ; 3 11 | = 104
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\frac{6}{1} \sum_{i=1}^{n} i^{2}
det| 9 4 ; 1 10 | = 86
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∂x/∂θ = 8x
CH₄ + 2O₂ → CO₂ + 2H₂O
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3φ² + 4φ + 2 = 0
det| 3 7 ; 2 4 | = -2
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