diff ( y , x , 1 ) = y * y; ! Digits := 32; max_terms := 30; ! x_start := 0.0; x_end := 0.5 ; diff(y,0,exact_soln_y(x_start)); glob_h := 0.01; glob_look_poles := true; glob_max_iter := 1000000; ! exact_soln_y := proc(x) 1.0/(1.0 - x); end;