Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 23:06Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 3 ; 7 6 | = 9
168K
det| 4 1 ; 4 5 | = 16
∫₀^∞ e^(-θ²) dθ = √π / 2
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∫₀^∞ e^(-x²) dx = √π / 2
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
259K
\oint_C \vec{F}\cdot d\vec{r} = 0
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
CH₄ + 2O₂ → CO₂ + 2H₂O
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C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
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\frac{9}{4} \sum_{i=1}^{n} i^{2}
\frac{4}{6} \sum_{i=1}^{n} i^{2}
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det| 9 4 ; 1 10 | = 86
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∑_{k=1}^{n} k = n(n+1)/2
70K