Hello,
This is a newbee's problem: I just tried wxMaxima 0.8.4 and entered as
in the manual (chap. 1, Introduction to Maxima) the following command:
plot2d(sin(x)/x,[x,-20,20])
I obtained the plot but on ending the plot window there appeared a
message in the main window:
plot2d: expression evaluates to non-numeric value somewhere in
plotting range.
What had I done wrongly? Thanks for your help in advance.
M. K. Shen