plot5+=parametric_plot3d((0,s,t),(s,-a,a),(t,0,b),color='gray',opacity=.75) Evaluate Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular Messages
plot5+=parametric_plot3d((0,s,t),(s,-a,a),(t,0,b),color='gray',opacity=.75)