Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 15:59Z
\lim_{y\to 0} \frac{\sin y}{y} = 1
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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AgNO₃ + NaCl → AgCl↓ + NaNO₃
det| 8 8 ; 0 9 | = 72
det| 10 9 ; 0 11 | = 110
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∑_{k=1}^{n} k = n(n+1)/2
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