Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-21 07:04Z
∑_{k=1}^{n} k = n(n+1)/2
3y² + 9y + 5 = 0
det| 9 4 ; 1 10 | = 86
7K
CaCO₃ → CaO + CO₂
det| 1 2 ; 4 2 | = -6
414K
∑_{k=1}^{n} k = n(n+1)/2
468K
∑_{k=1}^{n} k = n(n+1)/2
335K
det| 12 1 ; 5 13 | = 151
33K