Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:43Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
244K
∫₀^∞ e^(-t²) dt = √π / 2
52K
det| 12 5 ; 4 13 | = 136
Fe₂O₃ + 3CO → 2Fe + 3CO₂
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∫₀^∞ e^(-n²) dn = √π / 2
50K
det| 4 9 ; 7 5 | = -43
det| 9 4 ; 1 10 | = 86
137K
det| 1 1 ; 3 2 | = -1
∑_{k=1}^{n} k = n(n+1)/2
218K