Range of `f(x) = (2008^x+2008^(-x))/2` is

Range of f(x) = |x-2| is

Range of f(x) = |x-2| is

Range of f(x) = (x+2)/(|x+2|)

Range of f(x)= (x^(2)-x)/(x^(2)+ 2x) is …….

Let f(x)=((2008)^(x)+(2008)^(-x))/(2),g(x)=((2008)^(x)-(2008)^(-x))/(2) then prove that f(x+y)=f(x)f(y)+g(x)g(y)

Let f(x)=((2008)^x+(2008)^(-x))/2,g(x)=((2008)^x-(2008)^(-x))/2 then prove that f(x+y)=f(x)f(y)+g(x)g(y)

The range of f(x)=x^(2)+x+1 is

The range of f(x)=(x)/(1+x^(2))

The number of integers for which the function f(x)=^(2008)C_(2x-1000)+^(200-x)C_(3x) is defined is

The coefficient of x^(2012) in the expansion of (1-x)^(2008)(1+x+x^(2))^(2007), is