Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-19 03:19Z
\frac{1}{3} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
66K
∑_{k=1}^{n} k = n(n+1)/2
\frac{4}{6} \sum_{i=1}^{n} i^{2}
2K
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∇²x = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
380K
det| 7 8 ; 6 8 | = 8
119K
det| 11 9 ; 0 12 | = 132
472K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
392K