Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:42Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
det| 7 2 ; 7 8 | = 42
278K
∂x/∂θ = 8x
∑_{k=1}^{n} k = n(n+1)/2
339K
det| 4 8 ; 3 5 | = -4
177K
∑_{k=1}^{n} k = n(n+1)/2
316K
det| 9 6 ; 7 10 | = 48
387K