Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:21Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
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∑_{k=1}^{n} k = n(n+1)/2
468K
CaCO₃ → CaO + CO₂
det| 1 4 ; 3 2 | = -10
289K
det| 4 7 ; 2 5 | = 6
278K
e^{i\pi} + 1 = 0
∂x/∂r = 4x
\lim_{γ\to 0} \frac{\sin γ}{γ} = 1
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 9 5 ; 1 10 | = 85
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