emacs23 - Add a TeX symbol in the Emacs init file -

I am trying to add the following code to my .emacs init file:

  (Text-add-symbol '("EKRF" TEX-RGR-RIF))   
 But I can not get it to work command line From  emacs t.tex  ( t.tex  here is a sample text file) I get the following error when I run:  
  Warning ( Initialization): There was an error while loading `.emacs': the function of the symbol defined by the definition Numeric: TeX-add-symbols   
 I am using GNU Emacs version 23.3.1 at Ubuntu 12.04. My  .emacs  init file looks  
  (setq tex-auto-parse t) (setq reftex-label-alist ' (Zero) e zero "~ \\ eqref {% s}" zero zero)) (Ad-hook 'latex-mode-hook' turn-on-riftex) (Setac Reftex-Plug-in-Acatex T) (if I enter  esc -  (i.e. if the command is starting the  eval) ------- add-symbol '("eqref" TeX-arg-ref)) < / Code>  
 - Expression ) and enter  (text-add-symbol) ("eqref" TeX-arg-ref)  at the prompt Work fine (After running it, I can enter  \ eqref  in the buffer and it does the required work. But this is not a good solution, whenever I edit a file, This code is to be entered manually every time. This is the reason I try to set it in the  .emacs  file ..)  
  This Background information for the question:   
 I have a problem using the AucTeX style  amsmath.el . Ace That it did not load properly on my machine. For more information, see.   
 
 
 You have to evaluate the code  LaTeX-mode  is active, otherwise you The error is found  the function definition of the symbol is zero: the tax-add-symbol . You can add that function to the hook of  latex-mode  to override the potential other  eqref  macro definitions, to define macro definitions, you will see a dummy  ( Ignore this code, in your  .emacs , should do the following:     (add- Hook 'latex-mode-hook' (lambda () (text-add-symbol '("ekreff" tex-rzr-riff (ignored)))