Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-20 02:15Z
∇²t = 0
7r² + 4r + 0 = 0
det| 12 1 ; 4 13 | = 152
375K
∑_{k=1}^{n} k = n(n+1)/2
47K
∇²β = 0
\frac{8}{9} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
430K
det| 7 4 ; 4 8 | = 40
130K
8r² + 8r + 0 = 0
\lim_{x\to 0} \frac{\sin x}{x} = 1
det| 4 1 ; 3 5 | = 17