Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:39Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-r²) dr = √π / 2
46K
det| 7 4 ; 4 8 | = 40
468K
CaCO₃ → CaO + CO₂
det| 9 6 ; 7 10 | = 48
289K
e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
339K
\frac{4}{6} \sum_{i=1}^{n} i^{2}
177K
∂x/∂r = 4x
det| 7 6 ; 1 8 | = 50
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
316K
det| 12 4 ; 4 13 | = 140
∑_{k=1}^{n} k = n(n+1)/2