Find the first and second order partial derivatives for the multivariate functionyf (x.y)=xy --+e"logy1)Find f (x,y)c3a）-+e21og,0c)y++"2)Find f(x,y)a)2-y+）-2+oyc)2g+-3)Find f (x,y)1ea)1++(In2)ylogycy+京-eo,