Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:20Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
87K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
det| 2 7 ; 7 3 | = -43
61K
∇²x = 0
det| 2 4 ; 4 3 | = -10
380K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\frac{12}{7} \sum_{i=1}^{n} i^{2}
119K
det| 7 4 ; 4 8 | = 40
472K
E = mc²
∇²φ = 0
\lim_{x\to 0} \frac{\sin x}{x} = 1
12z² + 7z + 6 = 0