Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:13Z
∑_{k=1}^{n} k = n(n+1)/2
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
446K
3x² + 3x + 6 = 0
∑_{k=1}^{n} k = n(n+1)/2
144K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
371K
∇²t = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
86K
7z² + 2z + 0 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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det| 4 2 ; 5 5 | = 10
det| 9 4 ; 1 10 | = 86
354K
2H₂ + O₂ → 2H₂O
det| 2 8 ; 7 3 | = -50
402K
\lim_{x\to 0} \frac{\sin x}{x} = 1