Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-21 00:32Z
\lim_{r\to 0} \frac{\sin r}{r} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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iħ ∂ψ/∂t = Ĥψ
det| 10 7 ; 5 11 | = 75
det| 5 2 ; 3 6 | = 24
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∑_{k=1}^{n} k = n(n+1)/2
CaCO₃ → CaO + CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
Fe₂O₃ + 3CO → 2Fe + 3CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O