Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:13Z
∑_{k=1}^{n} k = n(n+1)/2
det| 1 4 ; 0 2 | = 2
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\oint_C \vec{F}\cdot d\vec{r} = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
\lim_{t\to 0} \frac{\sin t}{t} = 1
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\lim_{α\to 0} \frac{\sin α}{α} = 1
CH₄ + 2O₂ → CO₂ + 2H₂O
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det| 9 4 ; 1 10 | = 86
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\frac{10}{1} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
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F = G m₁m₂ / r²
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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det| 7 2 ; 3 8 | = 50
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det| 2 5 ; 6 3 | = -24
\frac{2}{1} \sum_{i=1}^{n} i^{2}