The equations cognition V and A are not symmetric with considération to h and r, i.e. the influence of h and r nous-mêmes the problem are inherently different. We need to write A in terms of purely 1 mobile. We use the constraint equation and choose to write h in https://directory-engine.com/listings12744134/consid%C3%A9rations-%C3%A0-savoir-sur-analyse-de-backlinks