y=arccos y=cosx A: -plot([x, COs(x),x=0. Pil, scaling=constrained, color=red, thickness=4): October 2004October, 2004 y x = cos with(plots): A:=plot([x,cos(x),x=0..Pi],scaling=constrained,color=red,thickness=4): B:=plot([cos(x),x,x=0..Pi],scaling=constrained,color=blue,thickness=4): y x = arccos