diff ( y , x , 1 ) = m1 * sin(x) - cos(x); ! Digits := 32; max_terms := 30; ! x_start := 0.1; x_end := 5.0 ; diff(y,0,exact_soln_y(x_start)); glob_h := 0.05; glob_look_poles := true; glob_max_iter := 1000000; ! exact_soln_y := proc(x) return(cos(x) - sin(x)) ; end;