Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:59Z
∑_{k=1}^{n} k = n(n+1)/2
det| 11 9 ; 5 12 | = 87
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det| 4 8 ; 3 5 | = -4
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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
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\frac{10}{1} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
473K