a := 4 a.minimum := 0 a.maximum := 5 b := 1 b.minimum := -2 b.maximum := 2 c := 1 c.minimum := -2 c.maximum := 2 d := 1 d.minimum := -2 d.maximum := 2 graph3d.box := true graph3d.mesh := true graph3d.view := top graph3d.perspective := false graph3d.resolution := 100 graph3d.color := byheight graph3d.background := white graph3d.minimumx := 0 graph3d.maximumx := 1 graph3d.minimumy := 0 graph3d.maximumy := 1 graph3d.minimumz := 0 graph3d.maximumz := .01 ; The command to generate the graph ; must be the last line in the file. graph3d( (y=2*(1+(sin(time/4))^2)*x*(1-x), y=(2*(1+(sin(time/4))^2))^2*x*(1-x)*(1-2*(1+(sin(time/4))^2)*x*(1-x))) )