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Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-20 00:51Z

∑_{k=1}^{n} k = n(n+1)/2

\frac{4}{9} \sum_{i=1}^{n} i^{2}

168K

∇ × E = −∂B/∂t

446K

3x² + 3x + 6 = 0

\binom{n}{k} = \frac{n!}{k!(n-k)!}

144K

d/dt [t^3] = 3t^2

371K

∇²t = 0

∫₀^∞ e^(-x²) dx = √π / 2

259K

∫₀^∞ e^(-t²) dt = √π / 2

86K

7z² + 2z + 0 = 0

11z² + 3z + 4 = 0

224K

∫₀^∞ e^(-n²) dn = √π / 2

234K

\lim_{α\to 0} \frac{\sin α}{α} = 1

218K

∂α/∂ω = 3α

354K

8ψ² + 7ψ + 0 = 0

70K