Student Support Forum: 'Missing Graphs, Contour Maps, etc.' topicStudent Support Forum > General > "Missing Graphs, Contour Maps, etc."
Author 
Comment/Response 
Jeremy Lau

10/09/08 00:06am
Dear All,
Last Sunday I just purchased this edition of Mathematica. I did not have any problems with it until tonight, when I want to create some contour maps and 3D plots of two variable functions. I found out that after I completed the command for the plot, an empty Cartesian Plane appeared for the Contour Maps and an empty 3D Box appeared for the graph. In other words, the contour map and graph of the function never appeared (see attachment). What is the problem and how is it resolved? Thank you.
Sincerely Yours,
Jeremy Lau
(* added in later post *)
I submitted a forum a short while ago, and I forgot to tell you. The functions I need to plot are f(x,y)=x^2xy, f(x,y)=(x+y)/y^2, f(x,y)=e^(x^2+y^2), f(x,y)=(x+y)/(x^2+y^21), and f(x,y)=(x^2+y^21)/[x^2+(y1)^2]. Thank you.
Attachment: Problem Graph 1.nb, URL: , 

   
 
