Thanks.. got it.. I just assumed that min is at +1.. so value is never negative.. :p

and Have u been able to solve Q no. 12th and 28th .. ????

I am putting questions here for convenience...

12. Consider the function..

f(x)= (x^t-1)/(x^t+1) ... (x>0)

The limit of the function as t tends to infinity;

(A) does not exist; (B) exists and is everywhere contin

(C) exists and is discontinuous at exactly one point;

(D) exists and is discontinuous at exactly two points.

28.