Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:50Z
∑_{k=1}^{n} k = n(n+1)/2
det| 3 6 ; 0 4 | = 12
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3x² + 3x + 6 = 0
\frac{3}{2} \sum_{i=1}^{n} i^{2}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∇²t = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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\frac{2}{2} \sum_{i=1}^{n} i^{2}
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7z² + 2z + 0 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 4 2 ; 5 5 | = 10
2H₂ + O₂ → 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
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\lim_{x\to 0} \frac{\sin x}{x} = 1