diff ( y , x , 1 ) = tanh (3.0 * x + 1.0 ) ; ! Digits := 32; max_terms := 40; ! x_start := 1.1; x_end := 2.0 ; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; # # Not Given = 0 # Real = 1 # Complex = 2 # No Pole = 3 # Impossible Eq = 4 # glob_type_given_pole := 3; ! exact_soln_y := proc(x) return(ln(cosh(3.0*x + 1.0))/3.0); end;