Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:36Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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\frac{6}{1} \sum_{i=1}^{n} i^{2}
\lim_{x\to 0} \frac{\sin x}{x} = 1
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∂x/∂θ = 8x
det| 7 4 ; 4 8 | = 40
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det| 5 2 ; 3 6 | = 24
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det| 9 5 ; 1 10 | = 85
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\lim_{t\to 0} \frac{\sin t}{t} = 1
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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