Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 17:25Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
iħ ∂ψ/∂t = Ĥψ
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∑_{k=1}^{n} k = n(n+1)/2
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3r² + 6r + 7 = 0
\frac{2}{2} \sum_{i=1}^{n} i^{2}
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∑_{k=1}^{n} k = n(n+1)/2
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E = mc²
det| 7 4 ; 4 8 | = 40
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CH₄ + 2O₂ → CO₂ + 2H₂O
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
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∑_{k=1}^{n} k = n(n+1)/2
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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