Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:35Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
289K
∂x/∂θ = 8x
det| 1 4 ; 3 2 | = -10
339K
\lim_{α\to 0} \frac{\sin α}{α} = 1
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3φ² + 4φ + 2 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
121K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
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