Primer naa str 39 predavanja

ContourPlot3D[{4x^2+y^2==z}, {x,-2,2},{y,-2,2},{z,0,5}, MeshFunctions->{#3&},AxesLabel->{x,y,z}]

ContourPlot3D[{4x^2+y^2==z,1==y, 1==x}, {x,-2,2},{y,-2,2},{z,0,5}, MeshFunctions->{#3&},AxesLabel->{x,y,z}]

ContourPlot3D[{4x^2+y^2==z,1==y}, {x,-2,2},{y,-2,2},{z,0,5}, MeshFunctions->{#3&},AxesLabel->{x,y,z}]

ContourPlot3D[{1==x, 4x^2+y^2==z}, {x,-2,2},{y,-2,2},{z,0,5}, MeshFunctions->{#3&}, AxesLabel->{x,y,z}]

ContourPlot3D[{4x^2+y^2==z,8x+2y-5==z}, {x,-2,2},{y,-2,2},{z,0,5}, MeshFunctions->{#3&}, AxesLabel->{x,y,z}]

ContourPlot3D[{4x^2+y^2==z,8x+2y-5==z}, {x,-3,3},{y,-3,3},{z,0,7}, MeshFunctions->{#3&}, AxesLabel->{x,y,z}]