Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 02:33Z
\lim_{r\to 0} \frac{\sin r}{r} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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E = mc²
∑_{k=1}^{n} k = n(n+1)/2
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\oint_C \vec{F}\cdot d\vec{r} = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∇ × E = −∂B/∂t
\oint_C \vec{F}\cdot d\vec{r} = 0
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
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