Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\frac{10}{3} \sum_{i=1}^{n} i^{2}
29K
7z² + 2z + 5 = 0
\frac{8}{1} \sum_{i=1}^{n} i^{2}
94K
det| 1 2 ; 7 2 | = -12
144K