plot1+=parametric_plot3d((s,-1+i/2,f(x=s,y=-1+i/2)),(s,-1,1),color="gray") Evaluate Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular Messages
plot1+=parametric_plot3d((s,-1+i/2,f(x=s,y=-1+i/2)),(s,-1,1),color="gray")