Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 21:51Z
AgNO₃ + NaCl → AgCl↓ + NaNO₃
\frac{2}{2} \sum_{i=1}^{n} i^{2}
144K
det| 4 7 ; 0 5 | = 20
∑_{k=1}^{n} k = n(n+1)/2
\frac{2}{2} \sum_{i=1}^{n} i^{2}
394K
\binom{n}{k} = \frac{n!}{k!(n-k)!}