Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 02:12Z
∂r/∂t = 7r
det| 5 6 ; 7 6 | = -12
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\lim_{y\to 0} \frac{\sin y}{y} = 1
det| 5 3 ; 7 6 | = 9
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det| 7 2 ; 7 8 | = 42
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iħ ∂ψ/∂t = Ĥψ
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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∑_{k=1}^{n} k = n(n+1)/2
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∑_{k=1}^{n} k = n(n+1)/2
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