Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:53Z
∑_{k=1}^{n} k = n(n+1)/2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
46K
∑_{k=1}^{n} k = n(n+1)/2
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
det| 2 7 ; 7 3 | = -43
278K
∂x/∂θ = 8x
det| 12 1 ; 5 13 | = 151
339K
∑_{k=1}^{n} k = n(n+1)/2
177K
3φ² + 4φ + 2 = 0
∫₀^∞ e^(-ψ²) dψ = √π / 2
121K
5ω² + 6ω + 0 = 0
det| 9 4 ; 1 10 | = 86
316K
∫₀^∞ e^(-θ²) dθ = √π / 2