with(plots):plot3d([u,v,u*v],u=-10..10,v=-10..10,axes=framed,orientation=[6,80]);plot3d([u+v,u-v,u*v],u=-10..10,v=-10..10,axes=framed,orientation=[56,70]);plot3d([u^2,v^2,u*v],u=-10..10,v=-10..10,axes=framed,orientation=[30,137]);plot3d([u*cos(v),u*sin(v),v],u=-10..10,v=-Pi..Pi,axes=framed);plot3d([u*cos(v),u*sin(v),u],u=-10..10,v=-Pi..Pi,axes=framed);plot3d([cos(u),sin(u),v],u=-Pi..Pi,v=-10..10,axes=framed);plot3d([2.0*cos(u)*sin(v),2.0*cos(u)*cos(v),2.0*sin(u)],u=-Pi..Pi,v=-Pi..Pi,axes=framed,scaling=constrained);plot3d([u*cos(v),u*sin(v),u^2/10],u=-10..10,v=-Pi..Pi,axes=framed,scaling=constrained,orientation=[51,64]);plot3d([2*u*cos(v),3*u*sin(v),u^2/2.5],u=-5..5,v=-Pi..Pi,axes=framed,scaling=constrained,orientation=[51,64]);plot3d([2*sinh(u)*cos(v),3*sinh(u)*sin(v),4*cosh(u)],u=-1..1, v = -Pi..Pi, axes=framed);plot3d([u,v,u^2+v^2],u=-10..10,v=-10..10,axes = framed);plot3d([(3+2*cos(v))*cos(u),(3+2*cos(v))*sin(u),2*sin(v)],u=-Pi..Pi,v=-Pi..Pi,axes=framed,scaling = constrained,orientation=[39,39]);