Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:40Z
∑_{k=1}^{n} k = n(n+1)/2
\lim_{x\to 0} \frac{\sin x}{x} = 1
244K
∑_{k=1}^{n} k = n(n+1)/2
52K
det| 12 5 ; 4 13 | = 136
\oint_C \vec{F}\cdot d\vec{r} = 0
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 8 ; 3 5 | = -4
100K
\frac{11}{6} \sum_{i=1}^{n} i^{2}
50K
det| 4 9 ; 7 5 | = -43
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
137K
det| 7 4 ; 4 8 | = 40
197K
det| 1 1 ; 3 2 | = -1
det| 11 9 ; 0 12 | = 132
196K