The equations connaissance V and A are not symmetric with observation 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 règles the constraint equation and choose to write h in https://seodirectoryseek.com/listings12746129/la-r%C3%A8gle-2-minutes-pour-rapport-seo