Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 18:23Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
320K
det| 7 4 ; 4 8 | = 40
144K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
det| 9 2 ; 3 10 | = 84
90K
2r² + 6r + 5 = 0
∑_{k=1}^{n} k = n(n+1)/2
211K