Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-09-15 08:13Z
\frac{1}{5} \sum_{i=1}^{n} i^{2}
\frac{10}{3} \sum_{i=1}^{n} i^{2}
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\oint_C \vec{F}\cdot d\vec{r} = 0
102K
∑_{k=1}^{n} k = n(n+1)/2
det| 1 4 ; 0 2 | = 2
422K
det| 9 7 ; 7 10 | = 41
F = G m₁m₂ / r²
\oint_C \vec{F}\cdot d\vec{r} = 0
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det| 1 2 ; 4 2 | = -6
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λ = h/p
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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