Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{12}{6} \sum_{i=1}^{n} i^{2}
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\oint_C \vec{F}\cdot d\vec{r} = 0
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
7z² + 2z + 5 = 0
det| 1 3 ; 4 2 | = -10
211K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{2}{7} \sum_{i=1}^{n} i^{2}
390K
det| 8 6 ; 5 9 | = 42
352K
\lim_{ψ\to 0} \frac{\sin ψ}{ψ} = 1
16K