Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:43Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
det| 4 2 ; 6 5 | = 8
468K
CaCO₃ → CaO + CO₂
CH₄ + 2O₂ → CO₂ + 2H₂O
289K
∫₀^∞ e^(-x²) dx = √π / 2
278K
e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
177K
∂x/∂r = 4x
det| 4 8 ; 3 5 | = -4
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 7 4 ; 4 8 | = 40
399K
det| 12 4 ; 4 13 | = 140
\frac{4}{5} \sum_{i=1}^{n} i^{2}