Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 07:29Z
∂y/∂t = 1y
∑_{k=1}^{n} k = n(n+1)/2
66K
∑_{k=1}^{n} k = n(n+1)/2
222K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 7 4 ; 4 8 | = 40
87K
ΔS ≥ 0
det| 6 1 ; 1 7 | = 41
\lim_{t\to 0} \frac{\sin t}{t} = 1
380K
\lim_{n\to 0} \frac{\sin n}{n} = 1
5φ² + 2φ + 6 = 0
\frac{9}{7} \sum_{i=1}^{n} i^{2}
3α² + 5α + 4 = 0