Field Notes / Σ /sym/1dfd20
id=885705 · host=formula-vault.cloud · 2026-08-30 16:43Z
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
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d/dr [r^11] = 11r^10
det| 6 2 ; 6 7 | = 30
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 11 4 ; 5 12 | = 112
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