Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 08:10Z
10t² + 7t + 4 = 0
det| 10 2 ; 1 11 | = 108
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d/dα [α^9] = 9α^8
det| 7 4 ; 4 8 | = 40
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det| 8 7 ; 2 9 | = 58
∂β/∂n = 6β
∑_{k=1}^{n} k = n(n+1)/2
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det| 10 4 ; 1 11 | = 106
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