Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 00:15Z
∑_{k=1}^{n} k = n(n+1)/2
3x² + 3x + 6 = 0
\lim_{α\to 0} \frac{\sin α}{α} = 1
144K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
371K
∇²t = 0
7z² + 2z + 0 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
224K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
234K
det| 4 2 ; 5 5 | = 10
det| 7 4 ; 4 8 | = 40
354K
2H₂ + O₂ → 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
70K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
402K