Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 07:33Z
6n² + 5n + 3 = 0
d/dt [t^6] = 6t^5
det| 3 1 ; 7 4 | = 5
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\frac{2}{3} \sum_{i=1}^{n} i^{2}
det| 5 6 ; 7 6 | = -12
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∑_{k=1}^{n} k = n(n+1)/2
det| 9 4 ; 1 10 | = 86
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d/dr [r^9] = 9r^8
∑_{k=1}^{n} k = n(n+1)/2
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