Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:50Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
289K
\lim_{r\to 0} \frac{\sin r}{r} = 1
278K
∂x/∂θ = 8x
\frac{2}{2} \sum_{i=1}^{n} i^{2}
339K
3φ² + 4φ + 2 = 0
∫₀^∞ e^(-x²) dx = √π / 2
358K
\lim_{t\to 0} \frac{\sin t}{t} = 1
121K
∑_{k=1}^{n} k = n(n+1)/2
399K
det| 9 4 ; 1 10 | = 86
316K