Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:54Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
Fe₂O₃ + 3CO → 2Fe + 3CO₂
46K
CaCO₃ → CaO + CO₂
e^{i\pi} + 1 = 0
∫₀^∞ e^(-x²) dx = √π / 2
339K
∂x/∂r = 4x
\lim_{α\to 0} \frac{\sin α}{α} = 1
358K
\frac{12}{6} \sum_{i=1}^{n} i^{2}
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
399K
det| 12 4 ; 4 13 | = 140
det| 9 4 ; 1 10 | = 86
11K
\frac{4}{5} \sum_{i=1}^{n} i^{2}