Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 07:50Z
∂y/∂t = 1y
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\oint_C \vec{F}\cdot d\vec{r} = 0
87K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
2K
ΔS ≥ 0
det| 9 4 ; 1 10 | = 86
174K
det| 6 1 ; 1 7 | = 41
det| 5 6 ; 2 6 | = 18
380K
∑_{k=1}^{n} k = n(n+1)/2
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\lim_{n\to 0} \frac{\sin n}{n} = 1
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
472K