Formula Ledger /sym/7ab403
id=1 · host=findroms.cloud · 2026-10-20 02:17Z
det| 1 4 ; 0 2 | = 2
∑_{k=1}^{n} k = n(n+1)/2
218K
∂ψ/∂φ = 2ψ
det| 9 4 ; 1 10 | = 86
248K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 4 6 ; 4 5 | = -4
299K
∇²t = 0
∫₀^∞ e^(-r²) dr = √π / 2
∂r/∂n = 3r