Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 08:10Z
10t² + 7t + 4 = 0
det| 7 4 ; 4 8 | = 40
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d/dα [α^9] = 9α^8
det| 12 1 ; 4 13 | = 152
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det| 8 7 ; 2 9 | = 58
∑_{k=1}^{n} k = n(n+1)/2
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∂β/∂n = 6β
det| 5 9 ; 0 6 | = 30
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