Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:11Z
∑_{k=1}^{n} k = n(n+1)/2
det| 9 4 ; 1 10 | = 86
244K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
52K
det| 12 5 ; 4 13 | = 136
\oint_C \vec{F}\cdot d\vec{r} = 0
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∫₀^∞ e^(-φ²) dφ = √π / 2
100K
\frac{11}{6} \sum_{i=1}^{n} i^{2}
50K
det| 4 9 ; 7 5 | = -43
AgNO₃ + NaCl → AgCl↓ + NaNO₃
137K
det| 1 1 ; 3 2 | = -1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
262K
det| 11 9 ; 0 12 | = 132
196K
∑_{k=1}^{n} k = n(n+1)/2
218K