Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:56Z
∑_{k=1}^{n} k = n(n+1)/2
det| 12 5 ; 4 13 | = 136
\frac{12}{7} \sum_{i=1}^{n} i^{2}
90K
∑_{k=1}^{n} k = n(n+1)/2
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\lim_{t\to 0} \frac{\sin t}{t} = 1
100K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
∑_{k=1}^{n} k = n(n+1)/2
137K
\oint_C \vec{F}\cdot d\vec{r} = 0
197K
det| 7 4 ; 4 8 | = 40
262K
det| 8 5 ; 3 9 | = 57
196K
\frac{8}{6} \sum_{i=1}^{n} i^{2}
218K