Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 22:43Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 2 ; 3 6 | = 24
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 11 9 ; 4 12 | = 96
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∇ × E = −∂B/∂t
∫₀^∞ e^(-θ²) dθ = √π / 2
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5z² + 5z + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 6 6 ; 3 7 | = 24
2H₂ + O₂ → 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
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2n² + 3n + 1 = 0