Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 18:47Z
det| 11 8 ; 0 12 | = 132
\binom{n}{k} = \frac{n!}{k!(n-k)!}
244K
det| 7 4 ; 4 8 | = 40
52K
N₂ + 3H₂ ⇌ 2NH₃
CH₄ + 2O₂ → CO₂ + 2H₂O
90K
\oint_C \vec{F}\cdot d\vec{r} = 0
91K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
100K
\lim_{α\to 0} \frac{\sin α}{α} = 1
50K
CH₄ + 2O₂ → CO₂ + 2H₂O
\frac{2}{2} \sum_{i=1}^{n} i^{2}
137K
2H₂ + O₂ → 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
262K