How to display symbolic function as written/coded

Hello, I am trying to symbolicly represent an equation used for a Davidenko numerical analysis method as described by (8).

Fairly new to using symbolic math with MATLAB so bare with me please. When I try to declare and display the above equation symbolicly and display the results with the following code:

syms n k cn Te ds cs ws           %Defining symbolic representation optical parameters (refractive index "n", and exinction coefficient "k"

T10 = ( (4.*cn)./((cn + 1).^2) );                                       %Fresnel Transmission coefficient between sample and air 

WP = ( exp(1j.*(cn - 1).*(ws*ds/cs)) );                                 %Wave propagation function through sample with thickness "d" in frequency domain "w"

denom = ( 1 - ( exp(2j.*cn.*(ws*ds/cs)).*((cn - 1)./(cn + 1)).^2 ) );   %Fabry-Perot reflection within sample

num = T10*WP;

f = Te - ( (num)/(denom) );          %This is f(w,cn) with constants "ds", "cs" (speed of light) 

disp('Symbolic representation of equ(8) from Fastampa');

Symbolic representation of equ(8) from Fastampa

disp(f);   %To test if equation rouglhy looks like that of literature                          

The result outputed what I interpret as equation (8) but with a common denominator for everything to the right of Texp(w):

I would like my symbolic equation output to not be "expanded" (i.e., have a common denominator) as it makes things easier to follow later on when I manipulate the equation further to take the derivative with respect to cn.

Is there a function or argument I am missing to ensure MATLAB does not change the symbolic equation as I have declared it?

I appreciate any insight :)

[Torsten]

There are certain internal rules how MATLAB arranges the representation of expressions / functions / equations. You cannot influence these internal rules.

[Walter Roberson]

The internal symbolic engine has ways of preventing operations from being carried out. Unfortunately, if you return that version of an expression to the MATLAB level, then MATLAB will reset the symbolic engine if you ask to display that version.

[Camille]

Thank you both for the clarification! I know and understand what MATLAB displays is equivalent to what I see in literature and declare :)