Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-08-30 17:33Z
det| 5 3 ; 4 6 | = 18
∑_{k=1}^{n} k = n(n+1)/2
372K
2H₂ + O₂ → 2H₂O
det| 8 2 ; 7 9 | = 58
36K
\frac{4}{3} \sum_{i=1}^{n} i^{2}
\frac{12}{7} \sum_{i=1}^{n} i^{2}
399K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
252K
N₂ + 3H₂ ⇌ 2NH₃
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
42K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O