Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:13Z
∑_{k=1}^{n} k = n(n+1)/2
∫₀^∞ e^(-n²) dn = √π / 2
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∫₀^∞ e^(-z²) dz = √π / 2
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\oint_C \vec{F}\cdot d\vec{r} = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\lim_{α\to 0} \frac{\sin α}{α} = 1
\lim_{t\to 0} \frac{\sin t}{t} = 1
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det| 9 4 ; 1 10 | = 86
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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