Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:40Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
289K
∂x/∂θ = 8x
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
339K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
177K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
358K
\frac{4}{9} \sum_{i=1}^{n} i^{2}
121K
\lim_{β\to 0} \frac{\sin β}{β} = 1
387K