Math Dump /sym/6c3138
id=1 · host=fr.findroms.cloud · 2026-10-19 20:42Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{2}{2} \sum_{i=1}^{n} i^{2}
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 8 9 ; 3 9 | = 45
∑_{k=1}^{n} k = n(n+1)/2
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∑_{k=1}^{n} k = n(n+1)/2
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C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
det| 5 6 ; 2 6 | = 18
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 2 3 ; 3 3 | = -3
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
\binom{n}{k} = \frac{n!}{k!(n-k)!}