Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:59Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 9 ; 7 6 | = -33
446K
3x² + 3x + 6 = 0
∇²t = 0
det| 6 6 ; 5 7 | = 12
259K
det| 9 4 ; 1 10 | = 86
86K
det| 3 1 ; 7 4 | = 5
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∑_{k=1}^{n} k = n(n+1)/2
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∫₀^∞ e^(-x²) dx = √π / 2
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