Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 20:15Z
\lim_{φ\to 0} \frac{\sin φ}{φ} = 1
∑_{k=1}^{n} k = n(n+1)/2
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∫₀^∞ e^(-t²) dt = √π / 2
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C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
det| 7 4 ; 4 8 | = 40
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det| 4 7 ; 5 5 | = -15
det| 12 1 ; 4 13 | = 152
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∑_{k=1}^{n} k = n(n+1)/2
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