Question: plotting graph in 2d

January 28 2013 emma hassan 45
1
Hi friends. Am trying to plot a graph that shows the difference between cubic spline, crank 
nicolson and exact soution in 2d through this command but am not able to get it. 
Whereas table is mentioned below at t=0.05
x	cubic	 crank	  exact
0.05 0.0879 0.0855 0.0756
0.15 0.2514 0.2446 0.2194
0.25 0.3807 0.3708 0.3417
0.35 0.4625 0.4512 0.4305
0.45 0.4928 0.4815 0.4773
0.55 0.4747 0.4646 0.4733
0.65 0.4151 0.4609 0.4305
0.75 0.3220 0.3160 0.3417
0.85 0.2655 0.2001 0.2194
0.95 0.0678 0.0685 0.0756
and commands are 
> M := ImportData();
> L := convert(M, listlist);
> plot(L, x = 0.5e-1 .. .95, axis[1] = [gridlines = [10, thickness = 2, subticks = false, color = blue]]);
but am receving error
Error, (in plot) found points with fewer or more than 2 components. Could anyone can help me...
I need graph somewhat like this with exact solution also but am not getting
 this through above commands
 
 
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