The Range of the function `f(x)=(x^(2)-x+1)/(x^(2)+x+1)` is

The range of the function f(x)=(x^(2)-2)/(x^(2)-3) is

Range of the function f(x)=(x^(2)-2)/(2x-3) is

The range of the function f(x)=5-4x-x^(2) is

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

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

The range of the function f(x)=(x+1)/(x-2) is

Range of the function f(x)=2+|x^(2)+1| is

If the range of the function f(x)= cot^(-1)((x^(2))/(x^(2)+1)) is (a, b), find the value of ((b)/(a)+2) .

The range of the function f(x)=(x^2+x+2)/(x^2+x+1),x in R , is (1,oo) (b) (1,(11)/7) (1,7/3) (d) (1,7/5)

Range of the function f(x)=(1+x^2)/(x^2) is equal to