Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:54Z
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
52K
det| 12 5 ; 4 13 | = 136
det| 9 4 ; 1 10 | = 86
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 2 7 ; 7 3 | = -43
100K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
det| 4 9 ; 7 5 | = -43
det| 1 1 ; 3 2 | = -1
∫₀^∞ e^(-φ²) dφ = √π / 2
262K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
196K
\frac{12}{6} \sum_{i=1}^{n} i^{2}
218K
∑_{k=1}^{n} k = n(n+1)/2
299K