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| 5 6 ; 7 6 | = -12
320K
\lim_{t\to 0} \frac{\sin t}{t} = 1
144K
\oint_C \vec{F}\cdot d\vec{r} = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\frac{12}{4} \sum_{i=1}^{n} i^{2}
29K
7z² + 2z + 5 = 0
det| 6 2 ; 0 7 | = 42
94K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 7 8 ; 4 8 | = 24
69K
det| 12 7 ; 7 13 | = 107
144K