Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 14:29Z
∫₀^∞ e^(-ψ²) dψ = √π / 2
∫₀^∞ e^(-z²) dz = √π / 2
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e^{i\pi} + 1 = 0
det| 7 4 ; 4 8 | = 40
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∑_{k=1}^{n} k = n(n+1)/2
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2H₂ + O₂ → 2H₂O
det| 10 7 ; 3 11 | = 89
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
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