Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:27Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-θ²) dθ = √π / 2
46K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
468K
CaCO₃ → CaO + CO₂
∫₀^∞ e^(-r²) dr = √π / 2
289K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
278K
e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
339K
∂x/∂r = 4x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
358K
det| 7 7 ; 4 8 | = 28
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O