# What is the domain and range of y=2^x?

Mar 30, 2016

I found:
domain: $- \infty <$$x$$< + \infty$
range: $0 <$$y$$< + \infty$

#### Explanation:

Your function can accept any real value of $x$ and devolves only positive values of $y$.
The domain will be any real $x$;
The range will be all the $y$ values between zero and $+ \infty$.
Graphically:
graph{2^x [-10, 10, -5, 5]}