Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 03:01Z
ω = 2πf
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 8 9 ; 4 9 | = 36
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∇²t = 0
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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8t² + 2t + 4 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
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det| 8 9 ; 1 9 | = 63
det| 4 6 ; 0 5 | = 20
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\oint_C \vec{F}\cdot d\vec{r} = 0
∑_{k=1}^{n} k = n(n+1)/2
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