plot1+=parametric_plot3d((s*cos(t),s*sin(t),s),(s,1,3),(t,pi/2,3*pi/2),color='#D81B60', opacity=.50) Evaluate Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular SharePermalinkShort temporary linkShare interact stateHelp | Powered by SageMath Messages
plot1+=parametric_plot3d((s*cos(t),s*sin(t),s),(s,1,3),(t,pi/2,3*pi/2),color='#D81B60', opacity=.50)