Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:21Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-z²) dz = √π / 2
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CaCO₃ → CaO + CO₂
det| 7 4 ; 4 8 | = 40
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e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
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∂x/∂r = 4x
det| 2 7 ; 7 3 | = -43
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det| 1 4 ; 3 2 | = -10
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