diff ( y , x , 1 ) = cos ( x ) ; ! Digits := 32; max_terms := 30; ! x_start := -5.0; x_end := 5.0 ; diff(y,0,exact_soln_y(x_start)); glob_h := 0.05 ; glob_look_poles := true; glob_max_iter := 10000; glob_display_interval := 0.1; glob_max_minutes := 10; ! exact_soln_y := proc(x) return(1.0 + sin(x)); end;