PDF-Ifwecandescribetheprojectionsofthecurvesinthe(x;y)-plane,that'senough. PDF document
2p 164x2y2Thegradientofthisfunctionisrff xf y 2x p 164x2y2y 2p 164x2y2ThecurveofsteepestdescentwillbeintheoppositedirectionrfSowerelookingforapathxtxtytwhosederivati