Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 01:17Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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3β² + 6β + 2 = 0
F = ma
\frac{12}{6} \sum_{i=1}^{n} i^{2}
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\frac{8}{7} \sum_{i=1}^{n} i^{2}
1x² + 5x + 7 = 0
det| 7 4 ; 4 8 | = 40
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∇²ψ = 0
AgNO₃ + NaCl → AgCl↓ + NaNO₃