Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 17:39Z
∑_{k=1}^{n} k = n(n+1)/2
det| 7 4 ; 4 8 | = 40
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8β² + 2β + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
276K
det| 3 7 ; 2 4 | = -2
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∑_{k=1}^{n} k = n(n+1)/2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\lim_{r\to 0} \frac{\sin r}{r} = 1
∫₀^∞ e^(-φ²) dφ = √π / 2
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∑_{k=1}^{n} k = n(n+1)/2
153K
det| 12 1 ; 1 13 | = 155
det| 5 6 ; 2 6 | = 18
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\lim_{t\to 0} \frac{\sin t}{t} = 1