Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:40Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-r²) dr = √π / 2
46K
CaCO₃ → CaO + CO₂
e^{i\pi} + 1 = 0
∂x/∂r = 4x
det| 9 5 ; 1 10 | = 85
358K
∫₀^∞ e^(-x²) dx = √π / 2
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 7 2 ; 7 8 | = 42
399K
det| 12 4 ; 4 13 | = 140
∑_{k=1}^{n} k = n(n+1)/2