Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 00:52Z
2H₂ + O₂ → 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
244K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
52K
det| 8 8 ; 7 9 | = 16
det| 7 4 ; 4 8 | = 40
90K
\oint_C \vec{F}\cdot d\vec{r} = 0
91K
CH₄ + 2O₂ → CO₂ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
137K
det| 10 3 ; 0 11 | = 110
det| 10 7 ; 3 11 | = 89
262K
∑_{k=1}^{n} k = n(n+1)/2
218K