Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:06Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
Fe₂O₃ + 3CO → 2Fe + 3CO₂
46K
CaCO₃ → CaO + CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
289K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
278K
e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
339K
∂x/∂r = 4x
det| 1 4 ; 3 2 | = -10
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 12 4 ; 4 13 | = 140
\binom{n}{k} = \frac{n!}{k!(n-k)!}
11K
det| 4 8 ; 3 5 | = -4
387K