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Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-20 00:55Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

\binom{n}{k} = \frac{n!}{k!(n-k)!}

446K

3x² + 3x + 6 = 0

F = G m₁m₂ / r²

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F = G m₁m₂ / r²

371K

∇²t = 0

∑_{k=1}^{n} k = n(n+1)/2

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iħ ∂ψ/∂t = Ĥψ

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7z² + 2z + 0 = 0

\lim_{ω\to 0} \frac{\sin ω}{ω} = 1

224K

∑_{k=1}^{n} k = n(n+1)/2

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det| 4 2 ; 5 5 | = 10

det| 9 4 ; 1 10 | = 86

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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

354K

2H₂ + O₂ → 2H₂O

∑_{k=1}^{n} k = n(n+1)/2

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iħ ∂ψ/∂t = Ĥψ

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