ChemCalc Dump /sym/93428e
id=1 · host=br.gridbatch.net · 2026-10-19 01:50Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
302K
∇²ω = 0
\lim_{x\to 0} \frac{\sin x}{x} = 1
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
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∑_{k=1}^{n} k = n(n+1)/2
310K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 11 9 ; 0 12 | = 132
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2H₂ + O₂ → 2H₂O
det| 7 4 ; 4 8 | = 40
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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10r² + 7r + 5 = 0
det| 9 1 ; 7 10 | = 83
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
6K