Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 15:59Z
\frac{7}{8} \sum_{i=1}^{n} i^{2}
CaCO₃ → CaO + CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
102K
\frac{3}{5} \sum_{i=1}^{n} i^{2}
det| 10 5 ; 4 11 | = 90
264K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
∇²θ = 0
∑_{k=1}^{n} k = n(n+1)/2
det| 9 1 ; 7 10 | = 83
\oint_C \vec{F}\cdot d\vec{r} = 0