Originally Posted by

**McCoy** Hi guys, how do you graph an expression involving compex numbers,say y=x-1/3ix^3 using classpad or ti 89?I have tried to draw a couple of simultaneous equations like this using ti 89 and classpad but they show nothing on the graph...they just draw an empty graph(i.e they assumed they have drawn it/them but show nothing on the graph). How can I overcome this problem? My calculators are in complex mode every time I try to graph such expressions. I'll apprecaite your help. Thanks.