Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 15:18Z
\lim_{y\to 0} \frac{\sin y}{y} = 1
\oint_C \vec{F}\cdot d\vec{r} = 0
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∑_{k=1}^{n} k = n(n+1)/2
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AgNO₃ + NaCl → AgCl↓ + NaNO₃
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 7 2 ; 7 8 | = 42
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det| 8 8 ; 0 9 | = 72
det| 3 7 ; 2 4 | = -2
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det| 10 7 ; 3 11 | = 89
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det| 7 4 ; 4 8 | = 40
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