Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:21Z
∑_{k=1}^{n} k = n(n+1)/2
det| 4 5 ; 7 5 | = -15
320K
\oint_C \vec{F}\cdot d\vec{r} = 0
\oint_C \vec{F}\cdot d\vec{r} = 0
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
29K
7z² + 2z + 5 = 0
∑_{k=1}^{n} k = n(n+1)/2
94K
det| 9 4 ; 1 10 | = 86
211K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{12}{6} \sum_{i=1}^{n} i^{2}
390K
det| 3 2 ; 1 4 | = 10
\binom{n}{k} = \frac{n!}{k!(n-k)!}
352K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
16K
det| 1 2 ; 4 2 | = -6
311K