GraphingCalculator 3.2; Window 44 6 580 629; PaneDivider 69; FontSizes 14 12 10; BackgroundColor 217 219 140; SliderVariable s; T -1 1.5; 3D.X -1 1; 3D.Y -1 1; 3D.Z -1 1; 3D.Axes 0; 3D.View 0.897994017697135 -0.391988683437445 -0.199879003992808 0.320605371020596 0.894029334847415 -0.312927698526442 0.301361809546142 0.216924919014135 0.928506671628058; 3D.Rotation 1 0 0 0 1 0 0 0 1; Color 6; Grain 0.966666666666667; Expr z=0; Color 4; Expr function(f,u,v)=u*cos([pi/2*v]); Color 5; Expr function(g,u,v)=u*sin([pi/2*v]); Color 2; Expr vector(x,y,z)=function(f,u,v)*vector(1,0,1)+function(g,u,v)*vector(1,0,0); Color 5; Opacity 0.7; Expr vector(x,y,z)=function(f,u,v)*vector(1,0,1)+function(g,u,v)*vector(1,1,0); Color 4; Opacity 0.7; Expr vector(x,y,z)=function(f,u,v)*vector(1,0,1)+function(g,u,v)*vector(0,1,0); Color 17; Expr vector(x,y,z)=u*vector(1,0,0)+v*u/2*vector(0,0,1); Color 17; Expr vector(x,y,z)=[u*vector(0,1,1)+v*u*vector(1,-1,-1/2)]; Color 2; Expr vector(x,y,z)=t*vector(1,0,1); Expr vector(x,y,z)=t*vector(1,0,0);