Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-20 20:27Z
∑_{k=1}^{n} k = n(n+1)/2
10x² + 3x + 7 = 0
det| 7 4 ; 4 8 | = 40
47K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 5 4 ; 7 6 | = 2
det| 5 6 ; 4 6 | = 6
430K
CH₄ + 2O₂ → CO₂ + 2H₂O
130K
2φ² + 1φ + 4 = 0
\frac{8}{7} \sum_{i=1}^{n} i^{2}
12r² + 1r + 6 = 0
7ψ² + 6ψ + 4 = 0