Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:54Z
\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| 2 3 ; 5 3 | = -9
289K
\lim_{r\to 0} \frac{\sin r}{r} = 1
278K
e^{i\pi} + 1 = 0
det| 10 3 ; 4 11 | = 98
177K
∂x/∂r = 4x
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
399K
\frac{8}{6} \sum_{i=1}^{n} i^{2}
316K
det| 12 4 ; 4 13 | = 140
∑_{k=1}^{n} k = n(n+1)/2