Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:21Z
∑_{k=1}^{n} k = n(n+1)/2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
144K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 1 3 ; 4 2 | = -10
90K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
7z² + 2z + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 8 1 ; 0 9 | = 72
390K
det| 7 2 ; 4 8 | = 48
16K