Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 00:41Z
2H₂ + O₂ → 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
244K
det| 7 4 ; 4 8 | = 40
52K
det| 8 8 ; 7 9 | = 16
det| 11 9 ; 0 12 | = 132
90K
CH₄ + 2O₂ → CO₂ + 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
100K
∑_{k=1}^{n} k = n(n+1)/2
50K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
137K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
197K
det| 10 3 ; 0 11 | = 110
det| 12 9 ; 5 13 | = 111
218K
∑_{k=1}^{n} k = n(n+1)/2
299K