Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-20 02:16Z
∇²t = 0
∑_{k=1}^{n} k = n(n+1)/2
164K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
232K
7r² + 4r + 0 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
375K
det| 7 4 ; 4 8 | = 40
47K
∇²β = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
165K
det| 5 6 ; 7 6 | = -12
372K
\frac{8}{9} \sum_{i=1}^{n} i^{2}
\frac{11}{6} \sum_{i=1}^{n} i^{2}
130K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
336K
∑_{k=1}^{n} k = n(n+1)/2
215K