Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:28Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
det| 9 2 ; 3 10 | = 84
87K
det| 5 6 ; 7 6 | = -12
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∑_{k=1}^{n} k = n(n+1)/2
174K
∇²x = 0
∑_{k=1}^{n} k = n(n+1)/2
335K
\frac{12}{7} \sum_{i=1}^{n} i^{2}
119K
det| 7 4 ; 4 8 | = 40
392K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
32K