Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:48Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-r²) dr = √π / 2
46K
CaCO₃ → CaO + CO₂
Fe₂O₃ + 3CO → 2Fe + 3CO₂
278K
e^{i\pi} + 1 = 0
∂x/∂r = 4x
det| 9 5 ; 1 10 | = 85
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 8 9 ; 4 9 | = 36
399K
CH₄ + 2O₂ → CO₂ + 2H₂O
316K
det| 12 4 ; 4 13 | = 140
det| 3 7 ; 2 4 | = -2
387K
∑_{k=1}^{n} k = n(n+1)/2