Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 22:13Z
F = G m₁m₂ / r²
∑_{k=1}^{n} k = n(n+1)/2
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
90K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
91K
2H₂ + O₂ → 2H₂O
det| 9 4 ; 1 10 | = 86
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\oint_C \vec{F}\cdot d\vec{r} = 0
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\oint_C \vec{F}\cdot d\vec{r} = 0
197K