Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 22:18Z
det| 5 1 ; 4 6 | = 26
\frac{4}{9} \sum_{i=1}^{n} i^{2}
46K
∑_{k=1}^{n} k = n(n+1)/2
468K
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
289K
12φ² + 4φ + 4 = 0
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
339K
E = mc²
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
358K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
\frac{4}{8} \sum_{i=1}^{n} i^{2}
det| 9 4 ; 1 10 | = 86
11K
det| 4 6 ; 5 5 | = -10