Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 07:09Z
∂y/∂t = 1y
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
87K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
2K
ΔS ≥ 0
det| 7 6 ; 1 8 | = 50
61K
det| 6 1 ; 1 7 | = 41
\oint_C \vec{F}\cdot d\vec{r} = 0
335K
\lim_{n\to 0} \frac{\sin n}{n} = 1
\frac{9}{7} \sum_{i=1}^{n} i^{2}
det| 12 9 ; 5 13 | = 111
32K
2H₂ + O₂ → 2H₂O