Let `f(x)=x/(1-x)` and let `alpha` be a real number. If `x_0=alpha, x_1=f(x_0), x_2 = f(x_1),.........and x_2011 = -1/2012` then the value of `alpha` is

Let f(x)=x/(1-x) and ' a ' be a real number. If x_0=a , x_1=f(x_0) , x_2=f(x_1) , x_3=f(x_2) and so on. If x_(2011)=- (1/2012) , then the value of reciprocal of ' a ' is

If f(x) =(alphax)/(x+1), x ne 1 , then the value of alpha for which f(f(x))=x is:

Let f(x)=(alpha x)/(x+1) Then the value of alpha for which f(f(x)=x is

" Let "f(x)=(alpha x)/(x+1),x!=-1" and "f(f(x))=x" ,then the value of "(alpha^(2))/(2)" is "

Let f(x)=(alphax)/(x+1),x ne -1 . Then, for what values of alpha is f[f(x)]=x?

Let f(x)=(alphax)/(x+1),x ne -1 . Then, for what values of alpha is f[f(x)]=x?

If f (x) =(alphax)/(x+1) (x ne -1), then the value of alpha for which f {f(x)}=x is-