Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:09Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 7 4 ; 4 8 | = 40
46K
CaCO₃ → CaO + CO₂
det| 6 6 ; 5 7 | = 12
289K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
278K
e^{i\pi} + 1 = 0
∂x/∂r = 4x
∫₀^∞ e^(-x²) dx = √π / 2
358K
∑_{k=1}^{n} k = n(n+1)/2
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 12 1 ; 5 13 | = 151
399K
\frac{12}{6} \sum_{i=1}^{n} i^{2}
316K
det| 12 4 ; 4 13 | = 140
\frac{4}{5} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2