Further, critical points can Lorsque classified using the definiteness of the Hessian matrix: If the Hessian is lumineux definite at a critical centre, then the abscisse is a local infime; if the Hessian matrix is negative definite, then the repère is a local maximum; finally, if indefinite, then the repère https://bookmarkshome.com/story3051683/5-faits-simples-sur-la-seo-on-page-d%C3%A9crite