# What is the range of the function y = 2^(x-1) ?

Range: $y > 0$
for any Real value of $x$
$\textcolor{w h i t e}{\text{XXX}} {2}^{x - 1} > 0$
(as $x \rightarrow - \infty$, ${2}^{x - 1} \rightarrow 0$ but equality is never achieved)