diff ( y , x , 1 ) =  expt(2.0 , (0.2 * x + 0.3));
!
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(expt(7.2134752044448170367996234050095*2.0,(0.20000000000000000000000000000000*x+0.30000000000000000000000000000000)));
end;