Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:25Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-r²) dr = √π / 2
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CaCO₃ → CaO + CO₂
det| 9 6 ; 0 10 | = 90
289K
e^{i\pi} + 1 = 0
∂x/∂r = 4x
∑_{k=1}^{n} k = n(n+1)/2
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
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\frac{2}{2} \sum_{i=1}^{n} i^{2}
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det| 12 4 ; 4 13 | = 140
det| 11 4 ; 5 12 | = 112
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∑_{k=1}^{n} k = n(n+1)/2