ANSWER TO QS. 2      

                  AS    SO SMETIMES X IS AN INTEGER AND SOMETIME A FRACTIONAL NUMBER SO {X}

           IS AN OSCILLATING FUNCTION BETWEEN       [0,1)  HENCE WE CAN NEVER PREDICT WHAT IT IS

       NOW YOUR QUESTION    {X }   /   TAN {X}          FOR SOMEVALUE  {X} IS 0 THEN ANSWER IS O

         WHILE FOR SOME VALUE IT IS SAY 0.3 THEN IT IS O.3 /  TAN 0.3          HENCE THE FUNCTION IF PLOTTED

     IS PERIODIC  WITH PERIOD 1 AND WOULD BE MOVING UP AND DOWN WITH UNDEFINED AND INTEGERS

      SO LIMIT DOESN'T EXIST ............WE CAN'T PREDICT WHAT THE LIMIT IS