plot1+=parametric_plot3d((a+t*stepsize,b+s*stepsize,f_val+t*stepsize*fx+s*stepsize*fy),(t,0,1),(s,0,1),color="orange",opacity=.6) Evaluate Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular Messages
plot1+=parametric_plot3d((a+t*stepsize,b+s*stepsize,f_val+t*stepsize*fx+s*stepsize*fy),(t,0,1),(s,0,1),color="orange",opacity=.6)