Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
320K
det| 1 3 ; 4 2 | = -10
144K
\oint_C \vec{F}\cdot d\vec{r} = 0
\frac{1}{4} \sum_{i=1}^{n} i^{2}
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 5 ; 7 5 | = -15
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7z² + 2z + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
94K
det| 11 9 ; 0 12 | = 132
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