Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 22:10Z
F = G m₁m₂ / r²
\oint_C \vec{F}\cdot d\vec{r} = 0
244K
det| 12 9 ; 5 13 | = 111
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
2H₂ + O₂ → 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
100K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
det| 8 4 ; 0 9 | = 72
det| 9 4 ; 1 10 | = 86
197K
det| 3 1 ; 4 4 | = 8
\frac{12}{6} \sum_{i=1}^{n} i^{2}
262K
∑_{k=1}^{n} k = n(n+1)/2
218K