diff ( y , x , 1 ) = sin ( x ) ; ! # Comment 1 Digits := 32; max_terms := 40; # Comment 2 ! # Comment 3 x_start := 0.1; x_end := 1.0; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; glob_max_iter := 1000000; glob_max_h := 0.5; # Comment 4 ! # Comment 5 exact_soln_y := proc(x) # Comment 6 return(2.0 - cos(x)); # Comment 7 end;