`nmono'
-------

nmono(RAT)
     :: RAT ñ༰ι.

RETURN
     
RAT
     ͭ

   * ¿༰Ÿ֤Ǥ 0 Ǥʤñ༰ι.
   * ͭξ, ʬҤʬι¤֤.
   * ȡ (*Note 긵η::) , ǤäƤñȤߤʤ
     . (1 Ĥ긵Ʊ. )

     [0] nmono((x+y)^10);
     11
     [1] nmono((x+y)^10/(x+z)^10);
     22
     [2] nmono(sin((x+y)^10));
     1


     `vtype'

