Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:38Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
278K
∂x/∂θ = 8x
det| 7 4 ; 4 8 | = 40
339K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
399K
det| 4 2 ; 6 5 | = 8
316K
det| 2 3 ; 5 3 | = -9
11K