diff ( y , x , 1 ) = cosh (2.0 * x + 3.0) ; ! Digits := 32; max_terms := 30; ! x_start := 0.1; x_end := 2.0 ; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; glob_max_iter := 100; ! exact_soln_y := proc(x) return(sinh(2.0*x+3.0)/2); end;