hi friends i have to plot multiple graph but problme is am not able to show curve instead of points. My input is in points but i want output in form of curve or points joining with lines. beside this i also want my both curves to be of different color so it can b highlihted that i have plotted two curves. I tried but am not able to change shape of points Graph.mw

am having my graph in points but i want it to plot surface from these points 2d_curent_heating_fd.mw

please let me know which commands to use here

y am not able to excutes these simple steps. What does this error means 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

I am done with my code but in the end my matirx B contains values in worng order. In matrix B am having row values in column and column values in row due to which my graph is not in correct form. What should i do to change these values..?? Attaching worksheet let me know. Thanks
code_for_neuman_1d_h.mw

my code is almost done but in the end my matrix command is not getting values from array command due to which am not able to get my solution and graph. Am attaching worksheet please let me know how to recorrect it. Thanks

y_not.mw