Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:19Z
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 11 8 ; 2 12 | = 116
90K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
94K
\frac{9}{8} \sum_{i=1}^{n} i^{2}
211K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
390K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
144K