If f: [1,∞)→[2,∞) is given by f(x)=x+1x , then f−1(x) is equal to

If f: [1,∞)→[2,∞) is given by f(x)=x+1x , then f−1(x) is equa

1.	If f: [1,∞)→[2,∞) is given by f(x)=x+1x , then f−1(x) is equal to
Answer» If f: $[1, \infty) \to [2, \infty)$ is given by $f (x) = x + \frac{1}{x}$ , then $f^{- 1} (x)$ is equal to