SetOptions[Plot3D,PlotStyle->{RGBColor[0,0.64,0.95],Opacity[0.8]},MeshStyle->{Thickness[0.001],Opacity[0.8]},BoundaryStyle->None,ClippingStyle->None,Lighting->{{"Point",RGBColor[0,0.64,0.95],{0,0,50}},{"Point",RGBColor[0,0.64,0.95],{50,0,0}},{"Point",RGBColor[0,0.64,0.95],{0,50,0}}},AxesLabel->{x,y,z},BoxStyle->GrayLevel[0.8],AxesOrigin->Automatic,ImageSize->400];
plots={
Plot3D[(x^2*y)/(x^4+y^2),{x,-5,5},{y,-5,5},Boxed->{Bottom,Front,Left},PlotPoints->50], 
Plot3D[(Abs[x]y^2)/Sqrt[x^2+y^2],{x,-1,1},{y,-1,1},PlotPoints->50],
Plot3D[(3x^2-x*y)/(x^2+y^2),{x,-2,2},{y,-2,2},PlotPoints->50],
Plot3D[(x*Cos[1/y])/(1+x^2+y^2),{x,-1,1},{y,-1,1},PlotPoints->50],
Plot3D[(Sin[x+y])/(x+y),{x,-10,10},{y,-10,10},PlotPoints->50]
};

plots[[1]]