Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 01:57Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
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3β² + 6β + 2 = 0
det| 1 4 ; 3 2 | = -10
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F = ma
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\frac{8}{7} \sum_{i=1}^{n} i^{2}
det| 5 3 ; 2 6 | = 24
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1x² + 5x + 7 = 0
det| 6 6 ; 3 7 | = 24
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∇²ψ = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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AgNO₃ + NaCl → AgCl↓ + NaNO₃