Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-07 21:31Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
CaCO₃ → CaO + CO₂
CH₄ + 2O₂ → CO₂ + 2H₂O
129K
det| 6 8 ; 5 7 | = 2
\frac{11}{6} \sum_{i=1}^{n} i^{2}
439K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
136K
det| 3 4 ; 4 4 | = -4
det| 12 3 ; 1 13 | = 153
4r² + 9r + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}