Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:20Z
∑_{k=1}^{n} k = n(n+1)/2
\lim_{r\to 0} \frac{\sin r}{r} = 1
320K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 5 3 ; 2 6 | = 24
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
Fe₂O₃ + 3CO → 2Fe + 3CO₂
394K
7z² + 2z + 5 = 0
∑_{k=1}^{n} k = n(n+1)/2
211K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 3 2 ; 1 4 | = 10
det| 10 1 ; 6 11 | = 104
352K
ω = 2πf