Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 19:27Z
∂r/∂φ = 2r
det| 8 9 ; 4 9 | = 36
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e^{i\pi} + 1 = 0
det| 1 1 ; 5 2 | = -3
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 6 ; 4 5 | = -4
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det| 9 4 ; 1 10 | = 86
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∫₀^∞ e^(-t²) dt = √π / 2
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∑_{k=1}^{n} k = n(n+1)/2
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det| 10 9 ; 0 11 | = 110
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