with equality only if $ a = b $, i.e., $ rac{p+q}{p-q} = rac{p-q}{p+q} $, which implies $ (p+q)^2 = (p-q)^2 \Rightarrow pq = 0 $, impossible. So $ R > 0 $, but minimum not attained. But perhaps the hydrologist defines $ R $ only when flow is stable — yet no such condition

Sat, 02 May 2026 15:36:58 +0000

Content under review