Further, Critical cote can be classified using the definiteness of the Hessian matrix: If the Hessian is positive definite at a critical cote, then the abscisse is a local minimal; if the Hessian matrix is negative definite, then the centre is a local acmé; finally, if indefinite, then the cote https://vitessedesite02344.wikilima.com/702442/5_faits_simples_sur_la_seo_on_page_décrite