Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 15:17Z
\lim_{y\to 0} \frac{\sin y}{y} = 1
∫₀^∞ e^(-t²) dt = √π / 2
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∑_{k=1}^{n} k = n(n+1)/2
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AgNO₃ + NaCl → AgCl↓ + NaNO₃
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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det| 8 8 ; 0 9 | = 72
det| 7 4 ; 4 8 | = 40
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det| 3 6 ; 0 4 | = 12
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\frac{12}{6} \sum_{i=1}^{n} i^{2}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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