Can you find this limit?

As x approaches Infinity, 1/x approaches 0, so 22^(1/x) approaches 1. Here '^' is power notation.

To make it abundantly obvious, perform a change of variables $x\to\frac{1}{y}$ . Then the limit becomes $\lim_{y\to0} 22^{y}$ . In this case we can now directly substitute because $f(y)=22^y$ is defined at $y=0$ : $\lim_{y\to0} 22^{y} = 22^{0} = 1$ .