Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:19Z
∑_{k=1}^{n} k = n(n+1)/2
det| 12 1 ; 5 13 | = 151
320K
det| 9 4 ; 1 10 | = 86
144K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 11 6 ; 2 12 | = 120
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
394K
7z² + 2z + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 3 2 ; 1 4 | = 10
ω = 2πf
det| 4 2 ; 4 5 | = 12
16K
det| 7 4 ; 2 8 | = 48
311K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
134K