Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:19Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
244K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
52K
det| 12 5 ; 4 13 | = 136
\oint_C \vec{F}\cdot d\vec{r} = 0
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
100K
det| 4 9 ; 7 5 | = -43
det| 11 9 ; 0 12 | = 132
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det| 1 1 ; 3 2 | = -1
det| 3 3 ; 4 4 | = 0
218K