diff ( y , x , 1 ) =  expt(sin(0.2 * x + 0.3) , 2.0);
!
Digits := 32;
max_terms := 30;
!
x_start := 0.1;
x_end := 5.0 ;
diff(y,0,exact_soln_y(x_start));
glob_h :=    0.05;
glob_look_poles := true;
glob_max_iter := 1000000;
!
exact_soln_y := proc(x)
return(-2.5000000000000000000000000000000*sin(.20000000000000000000000000000000*x+.30000000000000000000000000000000)*cos(.20000000000000000000000000000000*x+.30000000000000000000000000000000)+.50000000000000000000000000000000*x+.75000000000000000000000000000000);
end;