diff ( y , x , 1 ) = sin(x); ! Digits := 32; max_terms := 30; ! x_start := 0.1; x_end := 0.2 ; glob_display_interval := 0.01; diff(y,0,exact_soln_y(x_start)); glob_h := 0.0001; glob_look_poles := true; glob_max_iter := 10000000; ! exact_soln_y := proc(x) return(2.0 - cos(x)); end;