Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:07Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
CaCO₃ → CaO + CO₂
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
289K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
278K
e^{i\pi} + 1 = 0
det| 11 9 ; 0 12 | = 132
177K
∂x/∂r = 4x
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 9 4 ; 1 10 | = 86
316K
det| 12 4 ; 4 13 | = 140
\binom{n}{k} = \frac{n!}{k!(n-k)!}
387K
∑_{k=1}^{n} k = n(n+1)/2