Math Dump /sym/6c3138
id=1 · host=fr.findroms.cloud · 2026-10-19 20:20Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
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det| 8 9 ; 3 9 | = 45
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
\oint_C \vec{F}\cdot d\vec{r} = 0
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det| 2 3 ; 3 3 | = -3
\lim_{r\to 0} \frac{\sin r}{r} = 1
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det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 10 7 ; 3 11 | = 89
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
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