Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-18 22:11Z
det| 5 7 ; 7 6 | = -19
Fe₂O₃ + 3CO → 2Fe + 3CO₂
∑_{k=1}^{n} k = n(n+1)/2
138K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
138K
6n² + 8n + 4 = 0
\frac{11}{6} \sum_{i=1}^{n} i^{2}
176K
∇²φ = 0
det| 9 4 ; 1 10 | = 86
306K
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
374K
5y² + 8y + 1 = 0
det| 4 2 ; 3 5 | = 14
247K
det| 1 7 ; 3 2 | = -19
ΔS ≥ 0
AgNO₃ + NaCl → AgCl↓ + NaNO₃