Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 21:55Z
AgNO₃ + NaCl → AgCl↓ + NaNO₃
∑_{k=1}^{n} k = n(n+1)/2
144K
det| 4 7 ; 0 5 | = 20
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{12}{7} \sum_{i=1}^{n} i^{2}
94K
det| 12 4 ; 3 13 | = 144
\frac{8}{7} \sum_{i=1}^{n} i^{2}
69K
12γ² + 8γ + 0 = 0
det| 9 4 ; 1 10 | = 86
144K
9t² + 4t + 4 = 0