diff ( y , x , 1 ) = sin(x) * cos(x) ; ! Digits := 32; max_terms := 30; ! x_start := 0.1; x_end := 10.0 ; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; glob_max_iter := 100; ! exact_soln_y := proc(x) return(2.0 - expt(cos(x),2)/2.0); end;