Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:22Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
CaCO₃ → CaO + CO₂
\lim_{r\to 0} \frac{\sin r}{r} = 1
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e^{i\pi} + 1 = 0
∫₀^∞ e^(-α²) dα = √π / 2
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∂x/∂r = 4x
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\lim_{t\to 0} \frac{\sin t}{t} = 1
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det| 10 3 ; 4 11 | = 98
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det| 12 4 ; 4 13 | = 140
∑_{k=1}^{n} k = n(n+1)/2
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