Originally Posted by

**elluko2** hi guys, I am relatively new to Maple and am currently attempting to plot a 'dividing streamline' using the plot command.

My fuction is ((x+.5)^2 + y^2) + ((x-.5)^2 + y^2) =

Pi/4 [((x+.5)^2 + y^2)((x+.5)^2 + y^2)].

When I attempt to plot this in Maple I use the following command:

[IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-2.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-3.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-4.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-5.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-6.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-7.jpg[/IMG]plot(........, X);

but I receive:

Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct

Does anybody know where I am going wrong, or indeed, how to plot this function? Any help would be hugely appreciated.

Thanks,

Ben

[IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot.jpg[/IMG][IMG]file:///C:/Users/STEENM%7E1/AppData/Local/Temp/moz-screenshot-1.jpg[/IMG]