Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:23Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
320K
\oint_C \vec{F}\cdot d\vec{r} = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
29K
7z² + 2z + 5 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
94K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 3 2 ; 1 4 | = 10
\oint_C \vec{F}\cdot d\vec{r} = 0
352K
ω = 2πf
\frac{1}{4} \sum_{i=1}^{n} i^{2}
110K