Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:00Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
det| 1 4 ; 2 2 | = -6
66K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
222K
∑_{k=1}^{n} k = n(n+1)/2
det| 7 4 ; 4 8 | = 40
87K
∑_{k=1}^{n} k = n(n+1)/2
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
\lim_{x\to 0} \frac{\sin x}{x} = 1
61K
∇²x = 0
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
380K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
392K