ChemCalc Dump /sym/93428e
id=1 · host=br.gridbatch.net · 2026-10-19 01:03Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 9 4 ; 1 10 | = 86
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∇²ω = 0
det| 1 4 ; 3 2 | = -10
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{4}{6} \sum_{i=1}^{n} i^{2}
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\frac{2}{2} \sum_{i=1}^{n} i^{2}
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
\lim_{t\to 0} \frac{\sin t}{t} = 1
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AgNO₃ + NaCl → AgCl↓ + NaNO₃
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\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
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∑_{k=1}^{n} k = n(n+1)/2
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