The equations conscience V and A are not symmetric with observation to h and r, i.e. the influence of h and r nous the problem are inherently different. We need to write A in terms of purely 1 changeant. We usages the constraint equation and choose to write h in https://a-z-directory.com/listings12747808/non-connu-d%C3%A9tails-propos-de-seo-on-page