Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 17:05Z
CH₄ + 2O₂ → CO₂ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
244K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
52K
det| 3 1 ; 3 4 | = 9
Fe₂O₃ + 3CO → 2Fe + 3CO₂
AgNO₃ + NaCl → AgCl↓ + NaNO₃
100K
det| 9 4 ; 1 10 | = 86
50K
5β² + 1β + 1 = 0
\frac{12}{6} \sum_{i=1}^{n} i^{2}
197K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
196K