Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:53Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
244K
det| 9 4 ; 1 10 | = 86
52K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 11 9 ; 5 12 | = 87
50K
det| 4 9 ; 7 5 | = -43
∫₀^∞ e^(-φ²) dφ = √π / 2
137K
det| 1 1 ; 3 2 | = -1
det| 4 2 ; 3 5 | = 14
196K
det| 12 9 ; 3 13 | = 129