Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:23Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
75K
det| 7 4 ; 4 8 | = 40
479K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 5 9 ; 7 6 | = -33
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 1 4 ; 3 2 | = -10
191K
det| 5 9 ; 0 6 | = 30
390K
\lim_{α\to 0} \frac{\sin α}{α} = 1