Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 01:27Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
\lim_{γ\to 0} \frac{\sin γ}{γ} = 1
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ω = 2πf
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 1 7 ; 1 2 | = -5
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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det| 3 7 ; 2 4 | = -2
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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∑_{k=1}^{n} k = n(n+1)/2
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∫₀^∞ e^(-t²) dt = √π / 2
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∑_{k=1}^{n} k = n(n+1)/2
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