Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:18Z
∑_{k=1}^{n} k = n(n+1)/2
det| 11 9 ; 0 12 | = 132
244K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
52K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
50K
det| 7 4 ; 4 8 | = 40
137K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
197K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
196K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
218K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
299K