Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:13Z
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 7 4 ; 4 8 | = 40
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det| 1 1 ; 5 2 | = -3
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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∫₀^∞ e^(-t²) dt = √π / 2
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